Marine scientists have identified and named a mysterious creature of the deep sea after studying the elusive sea slug for twenty years.

It just kept popping up from Oregon to Southern California. At first, no one knew how to classify the strange sea slug. Recent improvements in underwater cameras allowed scientists to film its ...

Another 20 of the sea slugs were spied on the seafloor between ... between Oregon and as far south as Southern California, but another may have been spotted in the Mariana Trench in the Western ...