The bioluminescent animal didn’t match up with anything they’d seen before, so they nicknamed it the “mystery mollusk ... Steven H.D. Haddock, a marine biologist at the Monterey ...

This undated photo provided by Monterey Bay Aquarium and Research Institute, shows a mystery mollusk (Bathydevius caudactylus) observed by MBARI's remotely operated vehicle (ROV) Doc Ricketts in ...