Gymnodoris sp.

Image courtesy of Toni Chua
Pari Island, Indonesia

Gymnodoris sp. (undescribed)

Well, this is a great find. It is like nothing we have seen before. This species belongs to the group of Gymnodorids having a complete or nearly complete circle of gill branches, rather than the branches being in an arc.

Its coloration is almost the reverse of all other species, except G. aurita (Bill Rudman's Sea Slug Forum) and G. okinawa, where the ground color is light and the spots are dark. Here we have a species with brownish ground color and lighter cream spots.

Apparently this is not the first observation of this species which is found foraging for slugs on very shallow reefs flats. Tony found this one in only one meter of water.

Wish we could tell ya more.

Dave Behrens
Sammamish, WA 98074
Nov., 2013
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Toni on location at TNKLS, Indonesia

I have been interested about marine life since at university (2004). I started my first dive around 2007 and my regular dive site is Pramuka Island. A small island that's located in Kepulauan Seribu Marine National Park (TNLKS), Indonesia.

This nudibranch was be found in reef flat of Pari Island (shallow subtidal). It usually appears near rock with sand bottom in sea grass ecosystem.The island is outer part of TNKLS. Considering the depth is only 1 m depth, you only need to use your basic equipment to find this critter. I used a canon G15 in ikelite housing without a strobe to capture this critter.

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

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