Swimming Navanax from central California

August 6, 2007
From: Ron Eby

I'm attaching a picture taken 7/29/07 at Elkhorn Slough near Monterey, California. The specimen was found in the harbor about 1/4 mile from the entrance to the Monterey Bay. It was within inches of the surface and swimming.  It was near a section of bull kelp which had obviously washed in with the tide, so it may have been more a passenger than a swimmer. Relative size can be determined by the hand in the picture.

Locality: Moss Landing North Harbor, near surface, California, USA, Pacific Ocean, 29 July 2007, Intertidal harbor. Length: 7 inches. Photographer: Ron Eby.

I'm part of a group that helps protect the Monterey Bay Sanctuary by greeting kayakers on the water, making sure they respect the mammals and unique marine environment we have here.  The majority of our time is spent just chatting and providing information.  We run a bulletin board http://www.orgsites.com/ca/teamocean/index.html for our volunteers and I have also posted a copy of this sea hare there. I think further identification would be of interest to them, so I appreciate your research.

Thanks,
Ron

ronaldeby@peoplepc.com

Eby, R. G., 2007 (Aug 6) Swimming Navanax from central California. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20368

Dear Ron,
This is Navanax inermis. I must say I has never thought of this as a swimming species so if anyone with knowledge of this species can enlighten me on its swimming abilities I would be grateful.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Aug 6). Comment on Swimming Navanax from central California by Ron Eby. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/20368

Factsheet

Navanax inermis

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