February 27, 2006
From: Barbara Jeanne Lloyd
I received an email from David Behrens mentioning that you were soliciting for shots of Bulla gouldiana. He saw three photos that were posted on http://week.divebums.com for this week.
These photos were taken last weekend using an Olympus C-8080 with an Ikelite Housing and NiteRider dual halogen lights.
Locality: Vallecitios Wall, La Jolla Shores, La Jolla, 10m, CA, USA, East Pacific, 20 February 2006, Sandy euphotic zone. Length: 10 - 15 cm. Photographer: Barbara Jeanne Lloyd.
Barbara Jeanne Lloyd
Lloyd, B.J., 2006 (Feb 27) Bulla gouldiana - Gould's Bubble Snail. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15948
Thanks for these photos. It certainly fills a gap. I've included a closeup showing the rolled left 'rhinophore' or head tentacle which acts as a siphon, drawing water down and over the Hancocks' Organs, which are a sensory patch on each side of the head in cephalaspideans, which sense chemicals in the water.
Also, in the photo alongside I have added a white line to show the distinction between the true foot, which ends about halfway down the shell, and the posterior mantle lobe, which looks like part of the foot, but is in fact an extension of the mantle tissue which lines the inside of the shell.
Bulla gouldiana - egg laying
From: Kevin Lee, August 9, 2006
Bulla gouldiana aggregation, San Diego
From: Mike Neubig, May 25, 2006
Re: Gould's Bubble Snail - aggregation
From: Kevin Lee, May 25, 2006
Bulla gouldiana behaviour from San Diego
From: MIke Neubig, May 25, 2006
Gould's Bubble Snail - shell damage
From: Kevin Lee, May 3, 2006
Bulla gouldiana from La Jolla, California
From: Barbara Jeanne Lloyd, April 17, 2006
Bulla gouldiana, detail of shell markings
From: Mike Neubig, February 27, 2006
Bulla gouldiana from San Diego
From: Mike Neubig, February 21, 2006