Archives

Fig 3. Examples of metazoan megafauna photographed at the APEI6 seafloor during AUV survey. Scale bars representing 50 mm. (a) Actiniaria msp-6. (b) Actiniaria msp-13. (c) Bathygorgia cf. profunda. (d) Abyssopathes cf. lyra. (e) Left: Chonelasma sp.; right: Hyalonema sp. (f) Cladorhiza cf. kensmithi. (g) Bathystylodactylus cf. echinus. (h) Nematocarcinus sp. (i) Sabellida msp-1 (polychaete). (j) Left: Freyastera sp.; right: Caulophacus sp. (k) Psychropotes cf. longicauda. (l) Benthodytes cf. typica. (m) Coryphaenoides sp. (n) Typhlonus nasus. o and p: probable new Mastigoteuthis sp. Same specimen photographed with different cameras: (o) vertical view; (p) oblique view (Image taken ∼1″ prior to the vertical shot).

A year of discovery in the deep sea

2018 was a banner year for studies highlighting the importance of hydrothermal vents not just to the highly specialized communities that thrive around seafloor massive sulphides, but also to the surrounding benthic community. Vents provide nursery grounds for octopuses and deep-sea skates, but they also provide food for deep-sea and shallow water animals. At shallow-water […]

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Plastic ice bag found by a NOAA expedition to the Marianas in 2016. Image: NOAA Office of Ocean Exploration and Research

Microplastics in The Deep Ocean

Rachel Pendergrass | 15 November 2018 Giant gyers of floating plastic have long been at the forefront of the public conversation around ocean pollution, but there has been a dearth of research on the deeper issue of plastic that reaches below the surface. Since the onset of mainstream plastic production begin in the 1940s and […]

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Participants of DSBS 2018. Photo courtesy DSBS.

Deep-sea Biology Symposium: Mining Digest

The Deep-sea Biology Symposium convened last week for its triennial meeting. Over the course of 5 days, participants shared the latest discoveries in deep-sea biology, ecology, and stewardship. Not surprisingly, deep-sea mining played a major role in the weeks discussion. Though it’s hard to capture the breadth of the topics discussed (and many presentations remain […]

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Beaked whale gouges on the deep seafloor. Photo from Marsh et al. 2018.

Deep-diving whales lay tracks across the CCZ.

A series of tantalizing tracks on the seafloor led Dr. Leigh Marsh on a journey of discovery that could have significant implications for our understanding of the ecology of nodule fields while extending the record for deep diving marine mammals by over 1000 meters. It began in 2015, when the science team aboard the RRS […]

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Deep-sea glass sponges from a polymetallic nodule field. Image from Kersken et al. 2018.

Recent studies expand our understanding of the diversity, distribution, and resilience of species from polymetallic nodule fields.

The last half year saw a slate of great studies highlighting the diversity, distribution, and resilience (or lack thereof) of the animals that live in polymetallic nodule fields. While there are many, many more, we have selected a cross-section of the more unusual and unexpected findings. Sponges Sponges, particularly glass sponges, may prove to be […]

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New Depth Limit for Deep Sea Marine Burrows

Hydrothermal vents are used as nursery grounds for non-vent animals.

One of the most tantalizing emerging trends from the last half year are new studies showing connections between ecosystems  found on and surrounding hydrothermal vents and wider deep-sea communities. Much effort has been spent understanding how hydrothermal vent ecosystems are connected to each other but relatively few studies investigate how those communities are connected to […]

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Deep-sea fish use hydrothermal vents to incubate eggs deep sea ecosystems

New Studies Highlight Complexity of Deep Sea Ecosystems

Three new journal papers published since the beginning of the year highlight the complexity of deep sea ecosystems and reveal new information on some of the same seabed features targeted for seabed mining exploitation. Deep Sea Fish Use Hydrothermal Vents to Incubate Eggs A new study in the journal Scientific Reports reveals that species of […]

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New Papers Explore Environmental Impacts of Deep Sea Mining

New Papers Explore Environmental Impacts of Deep Sea Mining

Two new papers in major scientific journals opened the new year with a focus on the potential environmental impacts of deep sea mining.  The papers, published in Science and Frontiers in Marine Science, took big-picture looks at current scientific evidence on the impacts of seabed mining in the context of increased demand for  key minerals […]

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