This is only the second time the species has been recorded while alive. “I thought it was A.I.,” says fish biologist Kory Evans.

A scary-looking creature with “devil” in its name was spotted close to the surface off Tenerife, a Spanish island.

In the depths of the north Pacific, long wriggling creatures were caught up in the trawl of a research vessel off the coast of Russia. The animals were brought to the surface, their elongated bodies ...