Re: Sea Pens and Armina

October 7, 2005
From: Jan Kocian

Hi Bill,
Re your question about Sea Pens [#14913], yes all four I found were "uprooted" completely, laying on the sand and their polyps gone, I was
searching for one in the process of being attacked, but during my dive found
none. I am planning to revisit the site next year.

Thanks for all your great help.
Jan

honkoc@hotmail.com

Kocian, J., 2005 (Oct 7) Re: Sea Pens and Armina. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14935

Thanks Jan,
I guess the sea pens had either been washed out in a storm, or more likely attacked by something a bit bigger than Armina - a ray perhaps? Whatever it was, once they were lying defenceless on the sea bottom I guess they are fair game to anything that eats sea pens. My understanding is that Armina californica normally feeds at night, when the sea pens are fully expanded.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Oct 7). Comment on Re: Sea Pens and Armina by Jan Kocian. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14935

Factsheet

Armina californica

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