Re: Armina californica - feeding

June 2, 2010
From: Betty Bastai

Concerning message #20780:

I have read all the posts about Armina californica and I could not find any info on how the slung hunts.

Does it cruise under the sand until it detects a sea pen with its sense of smell, like a recent documentary about Puget Sound marine life suggests, or does it emerge from the sand, crawls on the bottom and then it finds the sea pen?


Bastai, B., 2010 (Jun 2) Re: Armina californica - feeding. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Betty,

Studying animals that spend a lot of time buried in the sand is difficult. Do they just bury themselves and hide/wait before surfacing again, or do they actively burrow along like moles? I am not sure that we have that sort of information on any burrowing sea slug, except for those which crawl along just beneath the surface. I assume that species of Armina use their rhinophores to smell their prey but whether or not they only do that at the surface I couldn't say. I refer on the species Fact Sheet to a study by Hans Bertsch on feeding in this species. Perhaps he could give us a better answer.

Best wishes,
Bill Rudman

Rudman, W.B., 2010 (Jun 2). Comment on Re: Armina californica - feeding by Betty Bastai. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


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