Wave of verified deep-sea biodiversity discoveries
Key Questions
What new species were highlighted in WoRMS Top 10 2025?
WoRMS Top 10 2025 included Antarctic Mobydickia poseidonii squid family and Okinawa bioluminescent zoanthid with golden sweeper kleptoproteinism. These discoveries underscore deep-sea diversity.
What did CSIRO discover in the Coral Sea?
CSIRO's expedition in the Coral Sea and Australian seamounts found over 110 new species, including rays, sharks, chimaeras, and catsharks from 200m to 3km depths. The total may exceed 200 species in a 1M km² unexplored area.
What biodiversity was found in Japan's deepest trenches?
Minderoo-UWA and JAMSTEC/China expeditions revealed 108 morphotaxa at 9775m, including mystery Animalia incerta sedis, deepest snailfish at 8336m, and crinoid meadows. A 9km+ unidentified species was also noted.
What is significant about the Greenland shark discovery?
A 392-year-old Greenland shark was found in the Arctic Ocean, the oldest known vertebrate. It has been wandering since around 1627.
What new species were discovered off Australia?
Over 100 new species were found deep below Australian seas in the Coral Sea, including starry handfish and Santa hat jelly. Protection efforts are urged before potential loss.
What threats face deep-sea biodiversity?
Threats include deep-sea mining, plastics, PCBs, and PFAS. About 91% of deep-sea life remains unknown, including prehistoric survivors.
What was observed at whale falls and cold seeps?
Expeditions like Schmidt's in Argentina documented whale falls at 3900m, Bathelia reefs, and 28 new species at cold seeps. These sites reveal unique ecosystems.
How much of the deep sea remains unexplored?
91% of deep-sea species are unknown, with 10k unexplored sites mapped by Katy Croff Bell for Nat Geo. Discoveries include gigantism, ultra-black camouflage fish, and vampire squid in OMZs.
WoRMS Top 10 2025: Antarctic Mobydickia poseidonii squid family, Okinawa biolum zoanthid/golden sweeper kleptoproteinism; Antarctic ice edge shark; Tuzo skates eggs; UniLodz CCZ amphipods new superfamily (mining crash); vents snail pop genomics connectivity; CSIRO Coral Sea/Aus seamounts 110+ new spp (rays/sharks/chimaeras/catsharks 200m-3km Dr White; starry handfish/Santa hat jelly/ghostshark; 1M km² unexplored park, protection push); NOAA Aleutians/ctenophore/Megalodon/Gulf 2000m/US deep sharks (Greenland 392yo Arctic record); USGS Escanaba vents/Atlantis H2 microbes/Gorda chemosynth; JAMSTEC/China Fendouzhe trenches snailfish; Schmidt Argentina Stygiomedusa 900m/whale fall 3900m/Bathelia reef/28 new spp/cold seeps; Minderoo-UWA Japan trenches 108 morphotaxa 9775m mystery Animalia incerta sedis 9km+/snailfish 8336m/crinoid meadows/deepest carn sponges (recent study confirms); Tel Aviv deep shark hotspot/eggs; giant 2m annelid worms 1500m mud; Katy Croff Bell Nat Geo 10k unexplored sites map; dragonfish/gigantism/Titanic rusticle microbes/ultra-black fish camouflage >99% light absorb; MBARI vampire squid OMZ; whale fall analogs; Newfoundland Southern Slope ancient corals (Oceana/DFO); 91% unknown/prehistoric survivors; threats mining/plastics/PCBs/PFAS. Verify DOIs.