First Live Footage Reveals Rare Blood-Red Squid in Antarctic Depths

Deep under the icy Antarctic seas, scientists have recorded for the first time a stunning sight: a vivid blood-red squid captured alive in its natural environment. On December 25, 2024, aboard the research vessel RV Falkor operated by the Schmidt Ocean Institute, researchers filmed the rarely seen Antarctic gonate squid (Gonatus antarcticus). Though discovered more than 100 years ago, this deep-sea species has remained elusive until now.

Documenting the Rare Species

The encounter occurred in the Weddell Sea, a remote and frigid environment known for its rich marine biodiversity. At depths reaching 2,100 meters beneath the ice, the squid was observed navigating the dark, cold waters. During its movement, it emitted a greenish ink plume, a defense strategy typical among squid, providing scientists with a rare observation of its natural behavior.

Thanks to cutting-edge ocean robotics, particularly remotely operated vehicles (ROVs), this groundbreaking footage was secured. Although first described by Swedish zoologist Einar Lönnberg in 1898, this marks the inaugural recording of the squid alive in its deep ocean habitat.

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Scientists on the research vessel successfully observed notable characteristics of the squid, including size and indications of territorial behavior. Credit: ROV SuBastian / Schmidt Ocean Institute

Verification of the Species

A marine biologist from the University of Auckland confirmed the identification by recognizing the squid’s distinctively long tentacles, each tipped with prominent hooks. These anatomical details helped differentiate the Antarctic gonate squid from other cephalopods. Despite being known to science for decades, this footage represents the first live documentation from the squid’s natural, deep-sea setting.

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Une publication partagée par National Geographic Society (@insidenatgeo)

Innovative Tools Unlock Ocean Secrets

The use of robust ROVs capable of withstanding the extreme pressures of the deep ocean was essential in obtaining this unique footage. These remote vehicles open access to previously inaccessible underwater realms, enabling researchers to gain new perspectives on marine life thriving in the planet’s most isolated corners. The Antarctic gonate squid’s footage showcases how transformative such technology is for deep-sea discovery.

The Southern Ocean around Antarctica stands as one of the most unexplored aquatic frontiers. Observing the gonate squid at great depths marks a pivotal advancement in unveiling the biological mysteries lurking beneath its icy layer.

Insights into Antarctic Oceanic Biodiversity

The Antarctic gonate squid represents just one fascinating inhabitant of the extreme ecosystems found in Antarctica’s frozen seas. Its ability to survive at such profound depths demonstrates remarkable resilience in a hostile environment. Modern exploration technologies are now shedding light on how these creatures endure and flourish under such conditions.

This achievement highlights the critical need for continuous deep-ocean research. Though countless species remain unseen in these shadowy habitats, capturing the Antarctic gonate squid alive offers a rare and valuable view of one of Earth’s most mysterious marine worlds.