Phidiana hiltoni - This nudibranch grows to 50 mm, or a little more than 2 inches in length. The reddish or brownish line across its head is almost always present, and is very characteristic of the species.
Nudibranch eating a hydroid. These are earth creatures.there are so many creatures under the sea that we know so little about that they seem like fantasy creatures or aliens! I think that's awesome by aurora