February 27, 2006
From: Mike Neubig
Thank you very much for your comments [#10999 ]. A detail of the same individual Bulla gouldiana as in my top two photos show three types of markings. Growth, parasite, predator (green, white, b&w)? It is interesting that the diffuse color patterns are neither delimited or structured by the growth patterns.
Locality: Valley-Sea-Toes, La Jolla Shores,, 14 m, California, USA, Eastern Pacific, 16 February 2006, Gradually sloping sand bottom. Length: 20 mm (shell). Photographer: Mike Neubig.
firstname.lastname@example.orgNeubig, M., 2006 (Feb 27) Bulla gouldiana, detail of shell markings. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15911
Thanks. The shell colour is deposited by the edge of the mantle - which is a layer of tissue which lines the inside of the shell. The growth lines you see in this species probably represent 'slowdowns' in growth rather than actual stoppages. Sometimes when the shell is edge is broken off, and repair and regrowth occurs, you will see a distinct break in the shell pattern.
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 - Gould's Bubble Snail
From: Barbara Jeanne Lloyd, February 27, 2006
Bulla gouldiana from San Diego
From: Mike Neubig, February 21, 2006