2025-12-16T09:18:58.411

NotApplicable

2025-12-16T22:03:46.104

We will be going down to explore a “pockmark” (a crater in the deep seafloor) at a depth of approx. 500 m, located in the Argentine Basin immediately adjacent to the geological basins of the Salado and the Colorado, with influence from Antarctic Intermediate Water.

2025-12-17T03:33:23.156

NotApplicable

2025-12-17T13:15:23.483

We will be going down to explore a “pockmark” (a crater in the deep seafloor) at a depth of aprox. 500 m, located in the Argentine Basin immediately adjacent to the geological basins of the Salado and the Colorado, with influence from Antarctic Intermediate Water. We will be positioned off the coast of Buenos Aires Province, specifically at: 796 km (430 nautical miles) east of Darregueira (Buenos Aires) 832 km (449) nm) southeast of Laguna Don Tomás in Santa Rosa (La Pampa) 1400 km (756 nm) southeast of Quimili (Santiago del Estero) 1061 km (573 nm) southeast of Mercedes (Corrientes) 1300 km (702 nm) southeast of Monte Comán (Mendoza) 1487 km (803 nm) northwest of Pico Truncado (Santa Cruz) 1137 km (614 nm) southeast of Villa Mercedes (San Luis) 1945 km (1050 nm) southeast of Cachi (Salta) Descripción de la inmersión: Estaremos bajando a explorar un “pockmark” (cráter en el fondo del mar profundo) a aproximadamente 500 m de profundidad, ubicado en la Cuenca Argentina inmediata a las Cuencas geológicas del Salado y del Colorado, con influencia de Agua Intermedia Antártica. Nos situaremos frente a la Provincia de Buenos Aires, específicamente a: 796 km (430 millas náuticas) al Este de Darregueira (Buenos Aires) 832 km (449 mn) al Sureste de Laguna Don Tomás en Santa Rosa (La Pampa) 1400 km (756 mn) al Sureste de Quimili (Santiago del Estero) 1061 km (573 mn) al sureste de Mercedes (Corrientes) 1300 km (702 mn) al sureste de Monte Comán (Mendoza) 1487 km (803 mn) al noroeste de Pico Truncado (Santa Cruz) 1137 km (614 mn) al sureste de Villa Mercedes (San Luis) 1945 km (1050 mn) al sureste de Cachi (Salta)

2025-12-17T17:13:51.743

NotApplicable

2025-12-18T03:03:28.842

Dive Description: We will be going down to explore a “pockmark” (a crater in the deep seafloor) at a depth of aprox. 500 m, located in the Argentine Basin immediately adjacent to the geological basins of the Salado and the Colorado, with influence from Antarctic Intermediate Water. We will be positioned off the coast of Buenos Aires Province, specifically at: 796 km (430 nautical miles) east of Darregueira (Buenos Aires) 832 km (449) nm) southeast of Laguna Don Tomás in Santa Rosa (La Pampa) 1400 km (756 nm) southeast of Quimili (Santiago del Estero) 1061 km (573 nm) southeast of Mercedes (Corrientes) 1300 km (702 nm) southeast of Monte Comán (Mendoza) 1487 km (803 nm) northwest of Pico Truncado (Santa Cruz) 1137 km (614 nm) southeast of Villa Mercedes (San Luis) 1945 km (1050 nm) southeast of Cachi (Salta) Descripción de la inmersión: Estaremos bajando a explorar un tren de pockmars (cráteres en el fondo del mar profundo) a aproximadamente 500 m de profundidad, ubicado en la Cuenca Argentina inmediata a las Cuencas geológicas del Salado y del Colorado, con influencia de Agua Intermedia Antártica. Nos situaremos frente a la Provincia de Buenos Aires, específicamente a: 796 km (430 millas náuticas) al Este de Darregueira (Buenos Aires) 832 km (449 mn) al Sureste de Laguna Don Tomás en Santa Rosa (La Pampa) 1400 km (756 mn) al Sureste de Quimili (Santiago del Estero) 1061 km (573 mn) al sureste de Mercedes (Corrientes) 1300 km (702 mn) al sureste de Monte Comán (Mendoza) 1487 km (803 mn) al noroeste de Pico Truncado (Santa Cruz) 1137 km (614 mn) al sureste de Villa Mercedes (San Luis) 1945 km (1050 mn) al sureste de Cachi (Salta)

2025-12-18T14:04:04.144

NotApplicable

2025-12-19T04:09:46.471

In the deep sea, where crushing pressure and scarce food supply challenge life, there are environments in which life thrives, supporting multiple species. In this dive, we descend to about one thousand meters depth in a sector of the Argentine Continental Slope where we expect to find a coral mound. Coral mounds are accumulations of calcified coral structures that build up over thousands of years. These three-dimensional structures provide shelter, nursery grounds, spawning areas, and feeding habitats for many other species. We will study their environmental and biological characteristics to better understand their distribution in the Argentine deep sea. We will be located off the coast of Buenos Aires Province, specifically at: 804.7 km distance from Darregueira (provincia de Buenos Aires) 924.7 km distance from Laguna Don Tomás (Santa Rosa, La Pampa) 1050.4 km distance from Mercedes (Corrientes) 1133.8 km from Villa Mercedes (San Luis) 1299.7 km from Monte Comán (Mendoza)

2025-12-19T15:37:33.574

NotApplicable

2025-12-20T07:35:01.515

Dive Description: We will descend to a water depth of approximately 2,500 m to explore a kilometer scarp with heights ranging between 100 and 200 m, located in the Argentine Basin immediately adjacent to the Salado and Colorado geological basins. We also plan to investigate comet-like depressions, possibly formed by the influence of Lower Circumpolar Deep Water. We will be positioned off the coast of Buenos Aires Province, specifically at: 820 km (442.7 nautical miles) east of Darregueira (Buenos Aires) 948 km (511.87) nm) southeast of Laguna Don Tomás in Santa Rosa (La Pampa) 1463.5 km (790.22 nm) southeast of Quimili (Santiago del Estero) 1139 km (615.01 nm) southeast of Mercedes (Corrientes) 1333.6 km (720.01 nm) southeast of Monte Comán (Mendoza) 1451.7 km (783.85 nm) northwest of Pico Truncado (Santa Cruz) 1190 km (642.54 nm) southeast of Villa Mercedes (San Luis) 1909.5 km (1031.04 nm) southeast of Cachi (Salta) Descripción de la inmersión: Descenderemos hasta una profundidad de agua de aproximadamente 2.500 m para explorar una escarpa kilométrica con un relieve de hasta 200 m y pendientes de hasta 50°, ubicados en la Cuenca Argentina, inmediatamente adyacente a las cuencas geológicas del Salado y del Colorado. También planeamos investigar depresiones erosivas con forma de cometa, posiblemente formadas por la influencia del Agua Profunda Circumpolar Inferior (Lower Circumpolar Deep Water). Nos situaremos frente a la Provincia de Buenos Aires, específicamente a: 796 km (430 millas náuticas) al Este de Darregueira (Buenos Aires) 832 km (449 mn) al Sureste de Laguna Don Tomás en Santa Rosa (La Pampa) 1400 km (756 mn) al Sureste de Quimili (Santiago del Estero) 1061 km (573 mn) al sureste de Mercedes (Corrientes) 1300 km (702 mn) al sureste de Monte Comán (Mendoza) 1487 km (803 mn) al noroeste de Pico Truncado (Santa Cruz) 1137 km (614 mn) al sureste de Villa Mercedes (San Luis) 1945 km (1050 mn) al sureste de Cachi (Salta)

2025-12-20T12:36:46.426

NotApplicable

2025-12-21T11:02:18.805

We will descend to a water depth of approximately 4,000 m to explore a kilometer scarp with a wall heights ranging between 100 and 200 m, located in the Argentine Basin immediately adjacent to the Salado and Colorado geological basins. We also plan to investigate comet-like depressions, possibly formed by the influence of Lower Circumpolar Deep Water. We will be positioned off the coast of Buenos Aires Province, specifically at: 820 km (442.7 nautical miles) east of Darregueira (Buenos Aires), 948 km (511.87) nm) southeast of Laguna Don Tomás in Santa Rosa (La Pampa) 1463.5 km (790.22 nm) southeast of Quimili (Santiago del Estero), 1139 km (615.01 nm) southeast of Mercedes (Corrientes), 1333.6 km (720.01 nm) southeast of Monte Comán (Mendoza), 1451.7 km (783.85 nm) northwest of Pico Truncado (Santa Cruz) 1190 km (642.54 nm) southeast of Villa Mercedes (San Luis), 1909.5 km (1031.04 nm) southeast of Cachi (Salta)

2025-12-22T11:07:16.586

NotApplicable

2025-12-23T02:56:31.829

We will descend to a water depth of approximately 3,000 m to explore the wall of a submarine canyon that incises the slope over 750 m. After diving roughly 150 m along the thalweg (the canyon floor), we will ascend just east of a prominent, 25 m-high bumpy feature that crosses the canyon wall transversely. Over a distance of approximately 1.5 km, we will document habitat variations across different depths, as well as associated geological features. During the last few hundred meters of the dive, just below the canyon rim, we will explore a steep wall where we expect to encounter exposed rock outcrops. We will be positioned off the coast of Buenos Aires Province, specifically at: 720 km (390 nautical miles) east of Darregueira (Buenos Aires) 870 km (470) nm) southeast of Laguna Don Tomás in Santa Rosa (La Pampa) 1640 km (885 nm) southeast of Quimili (Santiago del Estero) 1370 km (740 nm) southeast of Mercedes (Corrientes) 1290 km (700 nm) southeast of Monte Comán (Mendoza) 1130 km (610 nm) northwest of Pico Truncado (Santa Cruz) 1190 km (640 nm) southeast of Villa Mercedes (San Luis) 2030 km (1095 nm) southeast of Cachi (Salta)

2025-12-23T09:28:56.179

NotApplicable

2025-12-23T21:01:20.051

We will descend to a water depth of approximately 1,300 m to explore the wall of a submarine canyon that incises the slope over 300 m. After diving roughly 150 m along the thalweg (the canyon floor), we will ascend just east of a prominent bumpy feature that crosses the canyon in SW-NE direction. Over approximately 800 m, we will document habitat variations across different depths, as well as associated geological features. During the last few hundred meters of the dive, just below the canyon rim, we will explore a steep wall where we expect to encounter exposed rock outcrops. We will be positioned off the coast of Buenos Aires Province, specifically at: 660 km (360 nautical miles) east of Darregueira (Buenos Aires) 820 km (440) nm) southeast of Laguna Don Tomás in Santa Rosa (La Pampa) 1600 km (865 nm) southeast of Quimili (Santiago del Estero) 1350 km (730 nm) southeast of Mercedes (Corrientes) 1070 km (280 nm) southeast of Monte Comán (Mendoza) 1130 km (610 nm) northwest of Pico Truncado (Santa Cruz) 1125 km (610 nm) southeast of Villa Mercedes (San Luis) 1970 km (1065 nm) southeast of Cachi (Salta)

2025-12-24T19:13:10.747

NotApplicable

2025-12-25T07:02:15.183

During this special christmas dive we will descend to a water depth of 1264 m to explore the wall of a submarine canyon that incises the slope. After diving roughly 100 m along the thalweg (the canyon floor), we will ascend 400 m exploring a crest that crosses the canyon in SW-NE direction. Over approximately 2 Km, we will document benthic habitat variations across different depths, as well as associated geological features. On this occasion we are diving in the deep sea off Puerto Madryn at approximately 14.827 km distance to the North Pole and Santa Clause’s house. Descripción de la inmersión: Durante esta inmersión especial de Navidad, descenderemos a una profundidad de 1264 m para explorar la pared de un cañón submarino que corta la pendiente. Después de bucear unos 100 m a lo largo del talweg (el fondo del cañón), ascenderemos 400 m explorando una cresta que cruza el cañón en dirección SW-NE. A lo largo de aproximadamente 2 km, documentaremos las variaciones del hábitat bentónico a diferentes profundidades, así como las características geológicas asociadas. En esta ocasión, bucearemos en las profundidades marinas frente a Puerto Madryn a unos 14.827 km de distancia del Polo Norte y la casa de Papá Noel.

2025-12-25T16:00:20.848

NotApplicable

2025-12-26T06:55:19.665

During this special Christmas dive, we will descend to 2,700 meters depth to explore the wall of a submarine canyon, which cuts into the continental slope with a vertical relief of 625 meters. From the deepest point of the canyon, the thalweg, we will begin our ascent, traversing different terrace levels until reaching a prominent structure at 2,420 meters depth. This irregular structure, running parallel to the canyon wall, will allow us to study habitat variability and the associated invertebrate communities. During the final 150 meters of the dive, we will conclude the transect by ascending directly along the canyon wall. Durante esta inmersión especial de Navidad, descenderemos hasta los 2700metros de profundidad para explorar la pared de un cañón submarino, el cual incide en el talud con un desnivel vertical de 625 metros. Situados en el punto más profundo del cañón, thalweg, iniciaremos el ascenso recorriendo distintos niveles de terraza hasta alcanzar una prominente estructura, situada a los 2420 metros de profundidad. Esta estructura irregular y paralela a la pared del cañón, nos permitirá estudiar las variaciones de hábitat y de las diferentes comunidades de invertebrados asociadas. En los últimos 150 metros de la inmersión, culminaremos el recorrido ascendiendo directamente por la pared del cañón.

2025-12-29T14:01:20.587

NotApplicable

2025-12-30T00:46:28.437

During this dive in the Malvinas Basin area, we will for the first time visually observe the first active chemosynthetic ecosystem discovered in the Argentine deep sea. This site is a pockmark, an oval-shaped crater, where Bravo and others documented the presence of gas on the seafloor, including methane escaping as curtains of bubbles rising hundreds of meters into the water column, as well as evidence of chemosynthetic feeding in benthic organisms. The crater is located at approximately 450 m depth and is about 400 m in diameter. This exploration with the ROV SuBastian represents an unprecedented effort to conduct detailed studies of the influence of methane on hydrographic, biogeochemical, sedimentological, and biological properties. We will investigate whether habitats such as bacterial mats, methane-derived carbonates, and high-density patches of invertebrates are present. Durante esta inmersión en el área de Cuenca Malvinas estaremos visualizando por primera vez el primer ecosistema quimiosintético activo que fue descubierto en el mar profundo argentino. Se trata de un pockmark, o cráter de forma ovalada, en el cual Bravo y otros documentaron la existencia de gas en el fondo marino e incluso escapando en forma de cortinas de burbujas de cientos de metros de altura, así como evidencias de alimentación quimiosintética en los organismos bentónicos. Este cráter se encuentra a unos 450 m de profundidad y tiene unos 400 m de diámetro, siendo esta exploración con el ROV SuBastian un esfuerzo sin precedentes para estudios de detalle de la influencia del metano en las propiedades hidrográficas, biogeoquímicas, sedimentológicas y biológicas. Exploraremos si existen hábitats como matas bacterianas, carbonatos derivados de metano, y parches de alta densidad de invertebrados.

2025-12-30T05:28:58.365

NotApplicable

2025-12-30T22:33:11.234

During this dive in the Malvinas Basin area, we will explore geomorphologies associated with fluid seepage, that were previously acoustically described by part of the science team. The study area will cover water depths between 600 and 700 m, where the ROV SuBastian and other science equipment in the ship will be used to conduct detailed studies of the influence of methane on hydrographic, biogeochemical, sedimentological, and biological properties. Durante esta inmersión en el área de la Cuenca Malvinas, exploraremos geomorfologías asociadas a la filtración de fluidos, previamente descritas acústicamente por parte del equipo científico. El área de estudio abarcará profundidades de entre 600 y 700 m, donde el ROV SuBastian y otros equipos científicos a bordo del buque serán utilizados para llevar a cabo estudios detallados sobre la influencia del metano en las propiedades hidrográficas, biogeoquímicas, sedimentológicas y biológicas.

2026-01-02T18:23:50.434

NotApplicable

2026-01-03T03:49:17.357

During this dive in the Malvinas Basin, we will further explore chemosynthetic habitat patches associated with a methane-derived carbonate mound previously visited during ROV dive S0889. The area is characterized by a “horseshoe mound” geomorphology, where rocky outcrops formed by methane seepage alternate with soft sediments at depths of up to 627m. In Argentine waters, the biodiversity and environmental context of these chemosynthetic ecosystems remain poorly understood. This dive will improve our understanding of habitat patchiness and the biological complexity of this system.

2026-01-03T07:21:55.668

NotApplicable

2026-01-03T16:31:40.509

During this dive in the Malvinas Basin, we will explore an active pockmark, a crater-like structure in the seafloor modeled by gas seepage. This pockmark located at 420 m has a diameter of 300 m and exhibits gas bubbles in contact with the seafloor in the acoustic record. Curiously, to the sides of the pockmark there are two additional crater-like structures attached to it. During this dive we want to explore the diversity of habitats and lifeforms, and understand their ecological functions. Durante esta inmersión en la Cuenca de las Malvinas, exploraremos un pockmark activo, una estructura tipo cráter en el fondo marino modelada por la filtración de gases. Este pockmark, ubicado a 420 m de profundidad, tiene un diámetro de 300 m y presenta burbujas de gas en contacto con el fondo marino, registradas en los datos acústicos. Curiosamente, a los lados del pockmark hay dos estructuras adicionales tipo cráter asociadas a él. Durante esta inmersión buscamos explorar la diversidad de hábitats y formas de vida, y comprender sus funciones ecológicas.

2026-01-03T21:14:20.002

NotApplicable

2026-01-04T11:00:55.742

Dive Description: In this dive in the Malvinas Basin, we explore an erosive wall along the southern side of the Malvinas Trench. Starting at 810 m depth, we first observe life in soft sediments before ascending the wall. Along the way, we will study the animals we encounter, their diversity, biology, how they live, and how they interact with each other and with their environment. This includes examining environmental features through chemical, geological, and oceanographic observations, as we document how habitats and ecosystems change with depth until reaching 400 m. Descripción de la inmersión: En esta inmersión en la Cuenca de las Malvinas, exploramos una pared erosiva a lo largo del flanco sur de la Fosa de las Malvinas. Comenzamos a 810 m de profundidad, donde primero observamos la vida en los sedimentos blandos antes de ascender por la pared. A lo largo del recorrido, estudiaremos los animales que encontremos, su diversidad, biología, cómo viven y cómo interactúan entre sí y con su ambiente. Esto incluye el análisis de las características ambientales mediante observaciones químicas, geológicas y oceanográficas, mientras documentamos cómo cambian los hábitats y los ecosistemas con la profundidad hasta alcanzar los 400 m.

2026-01-04T17:36:03.862

NotApplicable

2026-01-05T02:39:03.87

Dive Description: During this dive in the Malvinas Basin, we will further explore chemosynthetic habitat patches associated with a methane-derived carbonate mound previously visited during ROV dive S0889. The area is characterized by a “horseshoe mound” geomorphology, where rocky outcrops formed by methane seepage alternate with soft sediments at depths of up to 627 m. In Argentine waters, the biodiversity and environmental context of these chemosynthetic ecosystems remain poorly understood. This dive will improve our understanding of habitat patchiness and the biological complexity of this system. Descripción de la inmersión: Durante esta inmersión en la Cuenca Malvinas, exploraremos en mayor detalle parches de hábitats quimiosintéticos asociados a un montículo carbonático de origen metanogénico, previamente visitado durante la inmersión ROV S0889. El área se caracteriza por una geomorfología en forma de “herradura”, donde afloramientos rocosos formados por filtraciones de metano alternan con sedimentos blandos a profundidades de hasta 627 m. En aguas argentinas, la biodiversidad y el contexto ambiental de estos ecosistemas quimiosintéticos siguen siendo poco conocidos. Esta inmersión permitirá mejorar la comprensión de la heterogeneidad de los hábitats y de la complejidad biológica de este sistema.

2026-01-05T08:07:48.159

NotApplicable

2026-01-05T22:05:25.012

In this dive in the Malvinas Basin, we explore an erosive wall along the southern side of the Malvinas Trench. Starting at 840 m depth, we first observe life in soft sediments before ascending the wall. Along the way, we will study the animals we encounter, their diversity, biology, how they live, and how they interact with each other and with their environment. This includes examining environmental features through chemical, geological, and oceanographic observations, as we document how habitats and ecosystems change with depth until reaching 400 m. En esta inmersión en la Cuenca de las Malvinas, exploramos una pared erosiva a lo largo del flanco sur de la Fosa de las Malvinas. Comenzamos a 810 m de profundidad, donde primero observamos la vida en los sedimentos blandos antes de ascender por la pared. A lo largo del recorrido, estudiaremos los animales que encontremos, su diversidad, biología, cómo viven y cómo interactúan entre sí y con su ambiente. Esto incluye el análisis de las características ambientales mediante observaciones químicas, geológicas y oceanográficas, mientras documentamos cómo cambian los hábitats y los ecosistemas con la profundidad hasta alcanzar los 400 m.