2024-10-13T10:20:00

NotApplicable

2024-10-13T11:40:23.677

Part A. Testing of the M3 mapping system and confirmation of SAGE CH4 Sensor operation. . Low altitude passes for SAGE and visual observation. Part B. Characterize the environments, water, fauna, sediments and rocks of Limari Canyon. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). This canyon has never been explored before. Please be on the lookout for evidence of seepage.

2024-10-13T12:44:12.141

NotApplicable

2024-10-13T13:04:09.479

Part A. Testing of the M3 mapping system and confirmation of SAGE CH4 Sensor operation. . Low altitude passes for SAGE and visual observation. Part B. Characterize the environments, water, fauna, sediments and rocks of Limari Canyon. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). This canyon has never been explored before. Please be on the lookout for evidence of seepage.

2024-10-13T14:16:12.804

NotApplicable

2024-10-13T23:13:20.578

Part A. Testing of the M3 mapping system and confirmation of SAGE CH4 Sensor operation. . Low altitude passes for SAGE and visual observation. Part B. Characterize the environments, water, fauna, sediments and rocks of Limari Canyon. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). This canyon has never been explored before. Please be on the lookout for evidence of seepage.

2024-10-15T08:32:36.097

NotApplicable

2024-10-15T19:42:18.357

Part A. Initial mapping with the M3 mapping system and confirmation of SAGE CH4 Sensor operation. Low altitude passes for SAGE and visual observation to look for seepage. Part B. Characterize the environments, water, fauna, sediments and rocks of seep features at this site - Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear).

2024-10-16T08:10:26.676

NotApplicable

2024-10-16T20:50:08.654

Part A. Initial mapping with the M3 mapping system and confirmation of SAGE CH4 Sensor operation. Low altitude passes for SAGE and visual observation to look for seepage. Part B. Characterize the environments, water, fauna, sediments and rocks of seep features at this site - Evaluate habitat types and distribution, use by surrounding deep- sea biota including commercial fish, debris (e.g., fishing gear).

2024-10-17T07:31:55.205

NotApplicable

2024-10-17T08:51:38.628

Part A. Initial mapping with the M3 mapping system and SAGE CH4 Sensor survey. Low altitude passes for SAGE and visual observation to look for seepage. Part B. Characterize the environments, water, fauna, sediments and rocks of seep features at this site - Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). This site is 1100 m north of the large mounds surveyed over the last two dives. Shipboard surveys at this site suggest a large depression or pockmark and high reflectance features suggestive of Carbonate. This will be the first ROV exploration of this region at El Quisco. Please be on the lookout for evidence of seepage (carbonates, microbial mats, clams, tube aggregations, nearby corals etc). Studies here could inform management of deeper waters.

2024-10-17T09:53:18.236

NotApplicable

2024-10-17T20:58:13.07

Part A. Initial mapping with the M3 mapping system and SAGE CH4 Sensor survey. Low altitude passes for SAGE and visual observation to look for seepage. Part B. Characterize the environments, water, fauna, sediments and rocks of seep features at this site - Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). This site is 1100 m north of the large mounds surveyed over the last two dives. Shipboard surveys at this site suggest a large depression or pockmark and high reflectance features suggestive of Carbonate. This will be the first ROV exploration of this region at El Quisco. Please be on the lookout for evidence of seepage (carbonates, microbial mats, clams, tube aggregations, nearby corals etc). Studies here could inform management of deeper waters.

2024-10-18T11:09:47.156

NotApplicable

2024-10-18T20:46:44.498

Explore Northern sector of El Quisco Seep. Visit targets identified during M3 mapping on the previous dive. Characterize the environments, water, fauna, sediments and rocks of seep features at this site - Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). This site is north of the large “Congrio” /Tubeworm mound surveyed on Dive 729. Shipboard surveys at this site suggest a strong of reflective patches indicative of carbonates. This will be the first ROV exploration of this part of El Quisco. Please be on the lookout for evidence of seepage (carbonates, microbial mats, clams, tube aggregations, nearby corals etc). Studies here could inform management of deeper waters.

2024-10-19T09:34:00

NotApplicable

2024-10-19T21:54:44.215

Characterize the environments, water, fauna, sediments of San Antonio canyon through coring, animal collections, Niskin water sampling and video transects. Evaluate habitat types and distribution in the axis and on the canyon walls, use by commercial fish, debris (e.g., fishing gear).

2024-10-20T09:07:15.535

NotApplicable

2024-10-20T22:01:44.586

Characterize the environments, water, fauna, sediments of San Antonio canyon through coring, animal collections, niskin water sampling and video transects. Evaluate habitat types and fauna distribution in the axis and on the canyon walls, use by commercial fish, debris (e.g., fishing gear).

2024-10-22T15:25:42.816

NotApplicable

2024-10-22T22:16:00.447

Characterize the environments, water, bottom fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep- sea biota including commercial fish, debris (e.g., fishing gear). We will also do a CTD oxygen sensor calibration sampling with niskins closed at the bottom and at 5 depths on ascent. The Concepcion site is a known seep site, first reported 20 years ago, in 2004. It has authigenic carbonates, Lamellibrachia tubeworms, frenulates, bacterial mats and multiple seep clam and crab species. This seep has also been reported as a Patagonia toothfish (Bacalao) aggregation site, and is fished regularly. This will be the second ROV exploration of the Concepcion seep, the first was done in 2010 by GEOMAR. Please be on the lookout for evidence of seepage (bubbles?, carbonates, microbial mats, clams, tube aggregations, nearby corals etc). There are 7 or more species of seep- associated bivalves - try to distinguish in observations! Studies here could inform management of deeper waters.

2024-10-23T06:56:12.071

NotApplicable

2024-10-23T21:50:07.919

Part A. Initial mapping with the M3 mapping system and SAGE CH4 Sensor survey. Low altitude passes for SAGE and visual observation to look for seepage. Part B. Characterize the environments, water, fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). The Concepcion site is a known seep site, first reported 20 years ago, in 2004. It has authigenic carbonates, Lamellibrachia tubeworms, frenulates, bacterial mats and multiple seep clam and crab species. This seep has also been reported as a Patagonia toothfish (Bacalao) aggregation site, and is fished regularly. This will be the second ROV exploration of the Concepcion seep, the first was done in 2010 by GEOMAR. We will be on the lookout for evidence of seepage (bubbles, carbonates, microbial mats, clams, tube aggregations, nearby corals etc). There are 7 or more species of seep- associated bivalves - we will try to distinguish in observations! Studies here could inform management of deeper waters.

2024-10-24T09:24:42.913

NotApplicable

2024-10-24T15:24:57.431

Part A. Initial mapping with the M3 mapping system and SAGE CH4 Sensor survey. Low altitude passes for SAGE and visual observation to look for seepage. Part B. We will continue working in the area sampled on Dive 735, picking up where that dive ended and working to the north. Characterize the environments, water, fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). Some BBC filming will occur for extended activities focused on one site with high abundance of animals. The Concepcion site is a known seep site, first reported 20 years ago, in 2004. It is extensive with seeps at depths ranging from 650 to > 900 m. It has authigenic carbonates, Lamellibrachia tubeworms, frenulates, bacterial mats and multiple seep clam beds and crab species and also associated coral/bryozoan/anemone fields. This seep has also been reported as a Patagonia toothfish/Chilean seabass (Bacalao) aggregation site, and is fished regularly. Please be on the lookout for evidence of seepage (bubbles, carbonates, microbial mats, clams, tube aggregations, nearby corals etc). Studies here could inform management of deeper waters.

2024-10-24T19:45:05.055

NotApplicable

2024-10-24T23:32:10.297

Re-do of the dive plan for 727 minus niskins and push cores completed then. Part A. Initial mapping with the M3 mapping system and SAGE CH4 Sensor survey. Low altitude passes for SAGE and visual observation to look for seepage. Part B. We will continue working in the area sampled on Dive 735, picking up where that dive ended and working to the north. Characterize the environments, water, fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). Some BBC filming will occur for extended activities focused on one site with high abundance of animals. The Concepcion site is a known seep site, first reported 20 years ago, in 2004. It is extensive with seeps at depths ranging from 650 to > 900 m. It has authigenic carbonates, Lamellibrachia tubeworms, frenulates, bacterial mats and multiple seep clam beds and crab species and also associated coral/bryozoan/anemone fields. This seep has also been reported as a Patagonia toothfish/Chilean seabass (Bacalao) aggregation site, and is fished regularly. Please be on the lookout for evidence of seepage (bubbles, carbonates, microbial mats, clams, tube aggregations, nearby corals etc). Studies here could inform management of deeper waters.

2024-10-25T08:55:38.777

NotApplicable

2024-10-25T20:22:30.046

Part A. Initial mapping (3 h) with the M3 mapping system and SAGE CH4 Sensor survey. Low altitude passes for SAGE and visual observation to look for seepage. Part B. We will explore a new mound and bubble site to characterize the environments, water, fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). Some BBC filming will occur for extended activities focused on one site with high abundance of animals. The Concepcion site is a known seep site, first reported 20 years ago, in 2004. It is extensive with seeps at depths ranging from 650 to > 900 m. It has authigenic carbonates, Lamellibrachia tubeworms, frenulates, bacterial mats and multiple seep clam beds and crab species and also associated coral/bryozoan/anemone fields. This seep has also been reported as a Patagonia toothfish/Chilean seabass (Bacalao) aggregation site, and is fished regularly. Please be on the lookout for evidence of seepage (bubbles, carbonates, microbial mats, clams, tube aggregations, nearby corals etc). Studies here could inform management of deeper waters.

2024-10-26T18:04:12.323

NotApplicable

2024-10-27T00:33:30.007

The Bio Bio Canyon is the submarine manifestation of the Bio Bio River near Concepcion. We will characterize the environments, water, fauna, & sediments of Bio Bio canyon through coring, animal collections, niskin water sampling and video transects. Evaluate habitat types and distribution in the axis and on the canyon walls, use by commercial fish, debris (e.g., fishing gear). Ideally compare to Concepcion slope and seep at similar depths. Watch out for evidence of seepage.

2024-10-27T11:02:08.377

NotApplicable

2024-10-27T22:14:32.25

The Bio Bio Canyon is the submarine manifestation of the Bio Bio River near Concepcion. We will characterize the environments, water, fauna & sediments of Bio Bio canyon through coring, animal collections, niskin water sampling and video transects. Evaluate habitat types and distribution in the axis and on the canyon walls, use by commercial fish, debris (e.g., fishing gear). Ideally compare to Concepcion slope and seep at similar depths. Watch out for evidence of seepage.

2024-10-28T11:47:56.806

NotApplicable

2024-10-29T02:03:56.32

Part A. Initial mapping (3 h) with the M3 mapping system and SAGE CH4 Sensor survey. Low altitude passes for SAGE and visual observation to look for seepage. Part B. We will explore a new potential seep site at the southern end of the Concepcion Methane Seep Area - to characterize the environments, water, fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris (e.g., fishing gear). Some BBC filming may occur for extended activities focused on one site with high abundance of animals. The Concepcion site is a known seep site, first reported 20 years ago, in 2004. This site is selected based on previous publication of seep indicators by Klauke et al. 2012, but has not been confirmed with regard to seep biology. Please be on the lookout for evidence of seepage (bubbles, carbonates, microbial mats, clams, tube aggregations, nearby corals etc), and use of the site by commercially harvested fish and invertebrates. Studies here could inform management of deeper waters.

2024-10-29T11:07:52.63

NotApplicable

2024-10-29T23:17:31.582

The Bio Bio Canyon is the submarine manifestation of the Bio Bio River near Concepcion. We will characterize the deep environments, water, fauna, &sediments ofBio Bio canyon through coring, animal collections, niskin water sampling andvideotransects. Evaluate habitat types and distribution in the axis and on the canyonwalls, use by commercial fish, debris (e.g., fishing gear). Ideally compare to Concepcionslopeand seep at similar depths. Watch out for evidence of seepage.

2024-10-31T08:02:03

NotApplicable

2024-11-01T01:01:34.986

Part A. Initial mapping (3 h) with the M3 mapping system and SAGE CH4 Sensor survey. Low altitude passes for SAGE and visual observation to look for seepage. Part B. We will explore a new potential seep site in deep water off Mocha Island to characterize the environments, water, fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris. This dive is based on Bottom Simulating Reflector (BSR) detection off Mochas Island by Vargas-Cordero et al. (2018) and shipboard acoustic bubble detection during our expedition. While very shallow seeps are known at Mocha Island, no direct seafloor exploration has occurred at the deep areas off Mocha Island. Please be on the lookout for evidence of seepage (bubbles, carbonates, microbial mats, clams, tube aggregations, nearby corals etc), and use of the site by commercially harvested fish and invertebrates. Studies here could inform management of deeper waters.

2024-11-01T06:59:31.027

NotApplicable

2024-11-02T00:58:20.241

Part A. Initial mapping (3 h) with the M3 mapping system. Part B. We will explore a new potential even deeper seep site off Mocha Island to characterize the environments, water, fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris. This dive is based on shipboard acoustic bubble detection during our expedition. While very shallow seeps are known at Mocha Island, no direct seafloor exploration has occurred at this deeper area off Mocha Island. Please be on the lookout for evidence of seepage (bubbles, carbonates, microbial mats, clams, tube aggregations, nearby corals etc), and use of the site by commercially harvested fish and invertebrates. Studies here could inform management of deeper waters.

2024-11-02T05:58:09.493

NotApplicable

2024-11-02T17:06:27.679

We will revisit the very extensive seep region investigated on Dive S0744, in 2700+ meter water off Mocha Island to characterize the environments, water, fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris. Key visitation areas include the black bacterial mats, northern rocky regions. Additional sites may be identified on M3 mapping (Nov. 1 evening). Please be on the lookout for evidence of seepage (bubbles, carbonates, microbial mats, clams, tube aggregations, nearby corals etc), interesting animal behavior and relationships, and use of the site by commercially harvested fish and invertebrates. Studies here could inform management of deeper waters.

2024-11-02T22:41:11.845

NotApplicable

2024-11-03T03:50:36.953

Dive Description: Part A. Initial mapping (1 h) with the M3 mapping system and SAGE CH4 Sensor survey. Low altitude passes for SAGE and visual observation to look for seepage. Part B. We will explore a new potential seep site in shallower water off Mocha Island to characterize the environments, water, fauna, sediments and rocks of seep features at this site. Evaluate habitat types and distribution, use by surrounding deep-sea biota including commercial fish, debris. While super shallow seeps are known at Mocha Island, no direct seafloor exploration has occurred at 400 m off Mocha Island. Please be on the lookout for evidence of seepage (bubbles, carbonates, microbial mats, clams, tube aggregations, nearby corals etc), and use of the site by commercially harvested fish and invertebrates. Studies here could inform management of deeper waters. Dive Activities/ Objectives: Part A – 1hour High resolution map (and locate active seepage sites if possible). Planned survey lines that cover the area of possible gas charged sediments. SAGE survey and low altitude pass over any potential seepage areas. Part B. (1) Search for active seepage areas (bubbles, bacterial mats, frenulates, tubeworm, clams, carbonates) (2) Collect cluster of 3 pushcores (Marlow) at background, off-seep area showing no manifestations of seep habitats. (2) Trip Niskin over pushcore area and record habitat. (3) Collect group of 6 good pushcores in close proximity in bacterial mat or other seep feature (3 for microbio Marlow, 1 for Gallardo, 1 for Jorge (seep), 1 for geochem Pachy/Paola (in seep or other). Draw core map. (5) Collect representative megafauna in coral quivers, slurps and one biobox compartment. [10 Lamellibrachia+10 Escarpia, White squat lobster, Molluscs, Echinoderms, Crustaceans, Polychaetes, Sponges, Other Cnidaria (anemones), demersal fish and others] (6) Take Niskin sample. Black and OctoCoral or Sponges: Photograph colony, zoom in to polyps and sclerites and photograph, cut a 10 cm piece with branches. Photograph retracted sclerites (zoomed in). Only once per morphospecies. Describe coral distribution in relation to the seep. (7) Suction different seep/background habitats. (8) If something really neat - Sample near surface sediments with sediment scoop - background and near bact. mats (9) Niskin samples: 2-3 more Niskin over different habitats (seeps if possible). Niskin 5,6 (for microplastics) over primary seep habitat. (10) Temperature probe measurements in seep sediments if there is shimmering water (11) Gas Sample at bubbling site (if present) at instruction of Jeff B. (12) Take remaining 4 pushcores in active seep sediments, preferably 2 with frenulates (for Rouse /Levin) and 2 clustered in mat (ideally) for Marlow.

2024-11-09T15:58:13.07

NotApplicable

2024-11-09T19:21:07.193

The objective of dive S0748 is to carry out detailed mapping of the vent fields at the Triple Junction using the M3 on board the ROV. This information will be used to identify the sampling locations for subsequent dives at the Triple Junction. The bottom depth is estimated to be 2950m. Ocean profiles will also be carried out using SAGE (Methane sensor) to a height of 300m above bottom, to identify the vent plume. Other observations may be made if there is time at the end of the dive.

2024-11-09T20:11:53.859

NotApplicable

2024-11-11T02:13:38.923

The objective of dive S0749 is to carry out detailed mapping of the vent fields at the Triple Junction using the M3 on board the ROV. This information will be used to identify the sampling locations for subsequent dives at the Triple Junction. The bottom depth is estimated to be 2950m. Ocean profiles will also be carried out using SAGE (Methane sensor) to a height of 300m above bottom, to identify the vent plume. Other observations may be made if there is time at the end of the dive.

2024-11-11T09:17:34.652

NotApplicable

2024-11-11T23:34:30.433

Dive S0750, this will be the first of a series of dives around the Triple Junction. This dive will examine some of the seafloor features identified using the M3 on Dive S0749. On this dive we will conduct video transects and collect biological samples from the sediments and any hard substrates. There will be some additional M3 mapping at the end of the dive.

2024-11-12T07:10:13.425

NotApplicable

2024-11-13T00:26:30.993

Dive S0751, this will be the second of a series of dives around the Triple Junction. This dive will examine some additional seafloor features identified during the ship Multibeam mapping in the area. On this dive we will conduct video transects, collect biological samples from the sediments and any hard substrates. There will be some additional M3 mapping at the end of the dive.

2024-11-13T09:00:26.05

NotApplicable

2024-11-14T17:13:40.036

Dive S0752 will explore an area just to the north of the area explored in the last three dives, being referred to as “Young Volcanics” This is an area that appears to show recent (in geological terms) volcanic activity. We will focus on a crater like feature that has been identified on the maps we made approaching the area. Today's dive will use SAGE profiles on the descent to look for methane anomalies. We will then proceed to visually survey the area along a route planned to take in areas where we think we may find seeps activity. Dive Activities/ Objectives: ● Deployment of 2 Amphipod traps (these will be collected on the following dive) at the ROV bottom contact position ● Video Transects along the crater area (see Additional Information for the Basic methodology); with minimal interruption for faunal sampling to ensure we make good time. ● Areas of interest will be noted for return visits on subsequent dives. ● If we make good time, and a suitable area of sediment is found, push-cores will be collected at the end of the dive. ● Gas samples taken if bubble streams are observed ● Vent water samples taken if active vent found

2024-11-16T09:08:49.769

NotApplicable

2024-11-16T09:49:43.965

Dive S0753 will target accreted terrains located to the east of the volcano “Kepuche” that we visited during the long dive S0752. The topography of this area consists of a steep slope up to the east crossed north to south by a fault line with an interesting pinnacle on the western side of the fault. Again the objectives will be to look for evidence of hydrothermal vents and seeps, and to collect both epibenthic fauna and infauna. epibenthicfauna and infauna. Dive Activities/ Objectives: Detailed examination of the topography and geology of the fault lines and pinnacle. Video transects to record the habitats and epibenthos of the area (See Additional Informationfor methods), Sponge samples. 2-3 grapefruit sized sponges (different species) stored in a dedicated BioBox4. Take a Niskin bottle at the same point. Coral samples. Small (10cm) fragments placed in Coral quivers (or BioBox3). Take a 5LNiskin bottle at the same point. Epibenthic fauna samples taken opportunistically with either manipulator, scoop, or suctionsampler; and stored as directed by the Watch lead. Take all 20 push-cores in a suitable area of sediment towards the end of the dive. Gas samples taken if bubble streams are observed Vent water samples taken if active vent found 2 Bag samples taken in locations determined by the Watch lead. Remaining Niskin bottles used to sample water over distinct habitats.

2024-11-16T10:52:20.282

NotApplicable

2024-11-17T01:04:30.716

Dive 753 was aborted due to ground faults on the stbd manip and ctd. Dive S0754 will target accreted terrains located to the east of the volcano “Kepuche” that we visited during the long dive S0752. The topography of this area consists of a steep slope up to the east crossed north to south by a fault line with an interesting pinnacle on the western side of the fault. Again the objectives will be to look for evidence of hydrothermal vents and seeps, and to collect both epibenthic fauna and infauna.

2024-11-17T09:05:41.726

NotApplicable

2024-11-17T23:03:41.294

The objective of Dive S0755 is to explore the shallow seeps (200m) that we believe we have identified at the head of a canyon located just off the coast of the Taitao peninsula. If there are seeps we will sample the seep fauna, the gasses and water emanating from the seeps. We will also sample a reference area away from the influence of the seepage. This will be the first of two dives in this area.

2024-11-18T10:53:19.993

NotApplicable

2024-11-18T22:07:48.213

Dive Description: The objective of Dive S0756 is to explore another group of shallow seeps (200m deep) that we believe we have identified at an adjacent area at the head of a canyon located just off the coast of the Taitao peninsula. Whenever there are seeps found, there will be sampling of the fauna, and the gasses and water emanating from the seeps. We will also sample a reference area away from the influence of the seepage. This will be the second of three dives in this canyon. Dive Activities/ Objectives: Exploratory video transects starting from a deeper section of wall area ( ~350m) and moving up the slope to record the habitats and epibenthos of this second section of the canyon (See Additional Information for methods) Detailed M3 mapping of the area identified for potential seepage fields across an area of 450 x 250m at a speed of 0.5 knots, at an altitude of 25m, and with a beam width of between 30 and 40m (the site at ~200m; so mapping may require a adjusting the beam width). After mapping is completed, continuation of exploratory video surveys to confirm the presence of seeps. Detailed examination of the seep sites, will include: Close-ups of mats, carbonates and other interesting structures or fauna Temperature probe measurement from the ROV, CH4 values from SAGE The collection of gas and water samples from the seeps (whenever requested – gastight bottles, Niskin bottle) carbonate samples, if present epibenthic fauna (of seep-associated fauna, and/or other specific fauna as directed by the Watch lead) For meiofauna sampling (Martinez group), take 4 push-cores from a reference site and 4 from a seeps site. The remaining push-cores will be taken at the seeps, at locations indicated by the microbiologists (Marlow and Thurber groups) Additionally, during the dive further collection will include: Epibenthic fauna samples to be taken opportunistically with either manipulator, scoop, or suction sampler; and stored as directed by the Watch lead. Sponge samples: 2-3 grapefruit sized sponges (different species) stored in a dedicated BioBox4. Take a Niskin bottle at the same point. Coral samples: Small (10cm) fragments placed in Coral quivers (or BioBox3). Take a 5L Niskin bottle at the same point (See Additional Information for methods). 2 Bag samples taken in locations determined by the Watch lead. Remaining Niskin bottles used to sample water over distinct habitats. Recovery of 2 Amphipod traps at the end of the dive near the seep area

2024-11-24T09:21:49.703

NotApplicable

2024-11-24T09:56:05.946

The objective of dive S0758 is to explore a new canyon system located off the channel Ladrrillero in the Magallanes region. We will characterize the deep environments, water, fauna, & sediments in the canyon through coring, animal collections, niskin water sampling and video transects.  Evaluate habitat types and distribution in the axis and on the canyon walls. Ideally, compared to other canyon systems in the Chilean margin with similar depths. Watch out for evidence of seepage. This will be the first of three dives in this canyon. Dive Activities/ Objectives: ● As soon as we reach the seafloor, and find a suitable area for Push-coring the following will be collected: o For sediment geochemistry and meiofauna sampling (Soto group), take 8 push-cores; o For microbiology sampling (Thurber group and Gerd), take 3 push-cores; o For meiofauna sampling (Martinez group), take 4 push-cores. ● Exploratory video transects starting from a deeper section to the wall area (3003m) and moving up the slope to record the habitats and epibenthos of this second section of the canyon (See Additional Information for methods) ● Further collection during the and determined by the Watch lead, will include: ○ Epibenthic fauna samples are to be taken opportunistically with either manipulator, scoop, or suction sampler; and stored as directed by the Watch lead. ○ Sponge samples: 2-3 grapefruit sized sponges (different species) stored in a dedicated BioBox4. Take a Niskin bottle at the same point. ○ Coral samples: Small (10cm) fragments placed in Coral quivers (or BioBox3). Take a 5L Niskin bottle at the same point (See Additional Information for methods). ○ 2 Bag samples taken in locations determined by the Watch lead. ● Remaining Niskin bottles used to sample water over distinct habitats.

2024-11-24T10:44:56.349

NotApplicable

2024-11-25T00:20:11.99

Dive 758 aborted due to the need to remove SAGE. The objective of dive S0759 is to explore a new canyon system located off the channel Ladrrillero in the Magallanes region. We will characterize the deep environments, water, fauna, & sediments in the canyon through coring, animal collections, niskin water sampling and video transects.  Evaluate habitat types and distribution in the axis and on the canyon walls. Ideally, compared to other canyon systems in the Chilean margin with similar depths. Watch out for evidence of seepage. This will be the first of three dives in this canyon. Dive Activities/ Objectives: ● As soon as we reach the seafloor, and find a suitable area for Push-coring the following will be collected: o For sediment geochemistry and meiofauna sampling (Soto group), take 8 push-cores; o For microbiology sampling (Thurber group and Gerd), take 3 push-cores; o For meiofauna sampling (Martinez group), take 4 push-cores. ● Exploratory video transects starting from a deeper section to the wall area (3003m) and moving up the slope to record the habitats and epibenthos of this second section of the canyon (See Additional Information for methods) ● Further collection during the and determined by the Watch lead, will include: ○ Epibenthic fauna samples are to be taken opportunistically with either manipulator, scoop, or suction sampler; and stored as directed by the Watch lead. ○ Sponge samples: 2-3 grapefruit sized sponges (different species) stored in a dedicated BioBox4. Take a Niskin bottle at the same point. ○ Coral samples: Small (10cm) fragments placed in Coral quivers (or BioBox3). Take a 5L Niskin bottle at the same point (See Additional Information for methods). ○ 2 Bag samples taken in locations determined by the Watch lead. ● Remaining Niskin bottles used to sample water over distinct habitats.

2024-11-25T08:08:51.778

NotApplicable

2024-11-25T23:06:20.352

The objective of dive S0760 is to continue to explore the canyon system located off the channel Ladrrillero in the Magallanes region. We will characterize the middle section of the canyon environment through sediment coring, rock and animal collections, water sampling and video transects, and in the axis and on the canyon walls. Ideally, these observations will be compared to other canyon systems in the Chilean margin. Watch out for evidence of seepage. This will be the second of three dives in this canyon.

2024-11-26T08:08:57.451

NotApplicable

2024-11-26T15:15:25.767

The objective of dive S0761 is to continue to explore the canyon system located off the channel Ladrrillero in the Magallanes region. We will characterize the shallowest section of the canyon environment through sediment coring, rock and animal collections, niskin water sampling and video transects, and in the axis and on the canyon walls. Ideally, these observations will be compared to other canyon systems in the Chilean margin. Watch out for evidence of seepage. This will be the last of the three dives in this canyon. Dive Activities/ Objectives: ● As soon as we reach the seafloor, and find a suitable area for Push-coring the following will be collected: o For sediment geochemistry and meiofauna sampling (Soto group), take 8 push-cores; o For microbiology sampling (Thurber group and Gerd), take 3 push-cores; o For meiofauna sampling (Martinez group), take 4 push-cores. ● Exploratory video transects starting from the axis to the wall (1800m-1400m) and moving up to record the habitats and epibenthos of this second section of the canyon (See Additional Information for methods) ● Collection during the dive determined by the Watch lead, will include: ○ Epibenthic fauna samples are to be taken opportunistically with either manipulator, scoop, or suction sampler; and stored as directed by the Watch lead. ○ Sponge samples: 2-3 grapefruit sized sponges (different species) stored in a dedicated BioBox4. Take a Niskin bottle at the same point. ○ Coral samples: Small (10cm) fragments placed in Coral quivers (or BioBox3). Take a 5L Niskin bottle at the same point (See Additional Information for methods). ○ 2 Bag samples taken in locations determined by the Watch lead. ● Remaining Niskin bottles used to sample water over distinct habitats.

2024-11-26T17:00:21.37

NotApplicable

2024-11-26T22:39:03.942

The objective of dive S0762 is to continue what was started on the previous dive to explore the canyon system located off the channel Ladrrillero in the Magallanes region. We will characterize the shallowest section of the canyon environment through sediment coring, rock and animal collections, niskin water sampling and video transects, and in the axis and on the canyon walls. Ideally, these observations will be compared to other canyon systems in the Chilean margin. Watch out for evidence of seepage. This will be the last of the three dives in this canyon.

2024-11-28T08:42:32.455

NotApplicable

2024-11-28T22:19:08.416

The objective of dive S0763 is to explore the canyon system located off Jorge Montt Island. We will characterize the deepest section of the canyon environment through sediment coring, rock and animal collections, Niskin water sampling and video transects, and in the axis and on the canyon walls. Ideally, these observations will be compared to other canyon systems in the Chilean margin. Watch out for evidence of seepage. This will be the first of the two dives in this canyon.

2024-11-29T07:37:42.436

NotApplicable

2024-11-29T17:06:58.414

The objective of dive S0764 is to explore the canyon system located off Jorge Montt Island. We will characterize the shallowest section of the canyon environment through sediment coring, rock and animal collections, Niskin water sampling and video transects, and in the axis and on the canyon walls. Ideally, these observations will be compared to other canyon systems in the Chilean margin. Watch out for evidence of seepage. This will be the last of the two dives in this canyon.

2024-12-02T11:43:13.183

NotApplicable

2024-12-03T00:29:54.827

The objective of dive S0765 is to explore the canyon system located off the Estrecho de Magallanes. We will characterize the deepest section of the canyon environment through sediment coring, rock and animal collections, Niskin water sampling and video transects, and in the axis and on the canyon walls. Ideally, these observations will be compared to other canyon systems in the Chilean margin. Watch out for evidence of seepage.