The Tilesius Plocamopherus (Plocamopherus tilesii) nudibranch is a very unusual looking nudibranch species that belongs to the Triophidae family. This species is not considered to be common and has been recorded in the waters of Japan, China and on the New South Wales coast in Australia. Plocamopherus species have many unusual characteristics, the most obvious being that they have paired appendages along the side of the body that generally end in a large round nodules/globes. Most of the Plocamopherus species have the ability to swim through the water by vigorous side to side movements of the body. The majority of Plocamopherus species feed on bryozoans.
Plocamopherus tilesii can be easily recognised by its large hammerhead and red/orange colouration of the body. The gills on this species are rather large and are generally a pale brown in colour. The rhinophores are generally a dark red colouration, similar to the colour of the mantle. There are also copious amounts of small blood red spots all over the body. This species is considered to be nocturnal as it is generally only observed on night dives. It is thought that it buries itself during the day under the sand. The Tilesius Plocamopherus (Plocamopherus tilesii) is one of the larger nudibranch species and grows to a maximum length of approximately 11 cm.
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