California researchers discover mysterious, gelatinous new sea slug
More than two decades after spotting a mysterious, gelatinous, bioluminescent creature swimming in the deep sea, California researchers this week announced that it was a new species of sea slug
![California researchers discover mysterious, gelatinous new sea slug](https://i.abcnewsfe.com/a/6cb7199e-fffd-4ac1-a4a9-1fa87211fa82/wirestory_173baca86b45302f3119f9e51f497c31_16x9.jpg?w=1600)
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