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ID Please..... Urchin????

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The R/C Man

Well-known member
Joined
Feb 20, 2004
Messages
423
Location
Spokane WA
While venturing the tide pools here in Okinawa I came across what appeared to be some kind of urchin. It has small spikes 1/4" in length facing in every direction and what appeared as four or five shells in the middle. The underside had a pinkish foot the size of it`s body that resembled an anenome foot. The length was about 4 or 5" and 2 to 3" wide. Here is a scetch of what I saw.....
 

Elmo18

Clownfish
Joined
Aug 5, 2003
Messages
2,662
Location
Seattle
Hi Greg,

Definitely not an urchin but more likely a family from Polyplacophora, or a Chiton.

The one you saw is most probably an Acanthopleura spinosa. It has a rough texture on its plates, and does have spiny appendages protruding from the girdle--their broad foot. It is longer than it is wide, which corresponds to your description.

Just a nice algae grazer found along reefs right above low tide line.

- Elmo
 

The R/C Man

Well-known member
Joined
Feb 20, 2004
Messages
423
Location
Spokane WA
Hey Elmo18!

Thanks for the response. There is so many creatures in the sea it is impossible to ID everything. Especially when you are new to it. Thanks!
 
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