Rostanga sp. 8

Image courtesy of Dr. Ruben Sarkissian
Nikon D800e in SeaCam housing, dual Sea & Sea D1 Strobes, Macro Mate on 105
Kasawari-Lembeh Resort, Lembeh,Indonesia.

Photo courtesy of Ruben Sarkissian

Rostanga sp. 8 (in Nudibranchs and Sea Slugs Identification)

Talk about a master of disguise, this creature is amazing. Specimens are usually identical in color to the sponge they live on. Not sure if Ruben's critter here was moved. In any event specimens are almost invisible on the sponges they feed on (see page 200 in NSSI) for a good example. The complex network of lines on the dorsum of the nudibranch matches the spicules in the sponge's surface, providing its camouflage.

Specimens may reach about 20mm in length. Nice find Ruben!

Dave Behrens
Sammamish, WA 98074
June, 2017
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Dr. Ruben Sarkissian on location somewhere
in the Banda Sea

Ruben is a retired Dentist and Faculty. Diving since 1980 with over 5000 dives.

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From left to right, Terry Gosliner, Angel Valdes, Dave Behrens La Jolla, Calif.

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