The bright colors warn predators of its bad taste,. It can swim by making a series of quick lateral, U-shaped bends to its body, first to one side, then to the other, as seen here. It feeds on hydroids. I wanted it to straighten out, but that is not its MO.
Beth Sargent, Cat Whiskers - Nan, Steve Corey, Frank217, and 2 other people added this photo to their favorites.

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GILVANDRO GURGEL "Vera re te" 14 months ago | reply
Your UnderWater shot looks great!

We can admire your picture on:
Under•:*¨`*:•Water•:*¨`*:•World
jkirkhart35 14 months ago | reply
Hi GILVANDRO GURGEL, Thanks for your kind comment. Much appreciated.
Paal Mathiesen/scuba-picture.com 6 months ago | reply
Beautiful colors.
jkirkhart35 6 months ago | reply
Hi Paal, I think it is one of the most colorful of some very beautiful animals. Love those nudibranchs! Thanks for your comment.