Scientists discover over 1,100 new marine species in landmark Ocean Census

8 hours ago 4
 The Nippon Foundation-Nekton Ocean Census/Agustín GaresePhylum: CnidariaTaxonomist: Dr Agustín GareseA decade in the making, this discovery represents only the third known species within the rare genus Harenactis. Originally collected in 2010 from the remote San Julián Peninsula in Argentina, the specimen has been the subject of long-term study by taxonomist Agustín Garese. Morphologically distinct from its relatives, this elusive anemone lives a solitary existence, found buried in fine sediment within the wide crevices of the intertidal zone at depths between 0.5 and 4 metres. Its inclusion in the Ocean Census highlights the value of revisited research; the team is now planning a return to this difficult-to-access site to secure new material for the molecular studies necessary to fully define this unique burrowing cnidarian.Credit: The Nippon Foundation-Nekton Ocean Census/Agustín Garese GNW

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World’s largest mission to accelerate species discovery reveals extraordinary new life forms from some of Earth’s most extreme and unexplored environments

Financial Post

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  • Scientists have found 1,121 previously unknown species, fast-tracking discovery and marking a 54% jump in annual identification.
  • Discoveries from depths of up to 6,575m include a new species of deep-sea ghost shark, a symbiotic bristle worm living within a ‘glass castle’, as well as corals, crabs, shrimps, sea urchins, and anemones.
  • Led by The Nippon Foundation-Nekton Ocean Census, this global effort included 13 expeditions and 9 species discovery workshops with leading scientists across the world.

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LONDON, May 18, 2026 (GLOBE NEWSWIRE) — Scientists have discovered 1,121 marine species in a single year, marking a significant step forward in efforts to document life in the world’s oceans. From the ‘Ghost Shark’ Chimaera, a distant relative of sharks and rays in the Coral Sea, to symbiotic worms on volcanic seamounts in Japan, the findings uncover a complex array of life beneath the ocean surface.

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The Nippon Foundation-Nekton Ocean Census, the world’s largest mission to accelerate ocean species discovery, marks a pivotal third year with 13 expeditions across some of the world’s most remote and least explored ocean regions, in partnership with JAMSTEC, CSIRO and the Schmidt Ocean Institute.

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With up to 90% of ocean species still undiscovered, the findings highlight both the sheer scale of life yet to be documented and the importance of building scientific data that policymakers and marine managers need to protect the ocean.

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Dr. Michelle Taylor, Head of Science at Ocean Census said:
“With many species at risk of disappearing before they are even documented, we are in a race against time to understand and protect ocean life. For too long, thousands of species have remained in a scientific ‘limbo’ because the pace of discovery couldn’t keep up. We are now breaking that bottleneck. By accelerating discovery and sharing data globally, we are not just finding new life, but generating the evidence needed to drive global science and policy at a critical moment.”

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Species Spotlights:

The ‘Ghost Shark’ Chimaera (Chimaera sp. 1)
Location: Coral Sea Marine Park, Australia Depth: 802–838 metres
Often called “ghost sharks,” chimaeras are among the most mysterious inhabitants of the deep ocean. Distant relatives of sharks and rays, they diverged into a distinct evolutionary lineage nearly 400 million years ago – predating the dinosaurs. The species was discovered by taxonomist Dr William White during a

CSIRO expedition

to the Coral Sea Marine Park, off the Queensland coast. Today, a third of sharks, rays and chimaeras are vulnerable to extinction.

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‘Life in a Glass Castle’ Symbiotic Worm (Dalhousiella yabukii):
Location: Shichiyo Seamount Chain, Japan Depth: 791 metres
Discovered on a volcanic seamount during the 2025 Ocean Census JAMSTEC-Shinkai Japan expedition, this polychaete worm makes its home inside a ‘glass castle’: the intricate chambers of a glass sponge, a creature with a skeleton made of crystalline silica. Named after the mission’s principal investigator, Dr Akinori Yabuki, this discovery was made by Dr Nato Jimi and published in The Zoological Journal of the Linnean Society.

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