Carnivorous ‘death ball’ sponge among new species found in depths of Southern Ocean

The Guardian
The Guardian 3M
Researchers found 30 new deep-sea species, including a carnivorous 'death ball' sponge, highlighting the Southern Ocean's rich biodiversity and the need for further exploration.
Carnivorous ‘death ball’ sponge among new species found in depths of Southern Ocean
A What happened
During an expedition in the Southern Ocean, scientists discovered 30 new species, including a carnivorous sponge known as 'death ball' and various new marine organisms such as scale worms, sea stars, crustaceans, and rare bivalves. The research team, part of the Nippon Foundation-Nekton Ocean Census, highlighted the region's profound undersampling, with only about 30% of collected samples analyzed so far. The spherical sponge, Chondrocladia sp nov, is particularly notable for its unique feeding mechanism, using tiny hooks to trap prey, contrasting with the typical filter-feeding behavior of sponges. The expedition also captured high-definition footage of previously unseen habitats, including the first confirmed sighting of a juvenile colossal squid, underscoring the need for continued exploration of this vital ecosystem.

Why it matters

  • Biodiversity in Southern Ocean: The Southern Ocean is home to a vast array of undiscovered species.

  • Unique feeding mechanism: The 'death ball' sponge uses hooks to capture prey, unlike typical sponges.

  • Need for further exploration: Only 30% of samples from the expedition have been analyzed, indicating more discoveries await.

Topics

Science & Research Biology Climate & Environment Wildlife

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