Marine biologists at the University of Copenhagen and Denmark's Natural History Museum have discovered an entirely new genus, Dendrogramma, of two new species. Dendrogramma is Latin for "baffling," because the species don't fit any existing classification. The little guys live in the deep sea and look like mushrooms.

D. enigmatica and D. discoides are "multicellular, non-bilaterian, mesogleal animals with some bilateral aspects," and they live 400-1000 meters below the ocean's surface.

According to the scientists' report in the journal PLOS One, D. enigmatica and D. discoides were first found almost 30 years ago off the coast of Australia. Why are we just hearing about this now?

[Photos via University of Copenhagen]