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Project Noah Nature School
Zirfaea crispata
1-3" Bivalve in Southern California.
Mud and clay
From Wikipedia "...one side of the piddock's shells has a set of ridges or "teeth", which they use to grind away at clay or soft rock and create tubular burrows. The shape of these burrows is due to the rotating motion of the piddock as it grinds the rock to make its home. The piddock stays in the burrow it digs for the entirety of its eight-year lifespan, with only its siphon exposed to take in water that it filters for food."
Spotted on Mar 10, 2014
Submitted on Mar 12, 2014
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