Scale-sided Piddock
(Parapholas californica) grinds clay or soft rock and create tubular burrows.
Scale_Sided_Piddock_20101020_163345_BCY_2304.jpg

The Shell Visible
(1 of 3) (1018 views)

Scale-sided Piddock (Parapholas californica)
Monterey Bay Aquarium internal link
886 Cannery Row, Monterey, California
(Photo posted Saturday 19 November 2011)
(Photo taken 16:33:45 Wednesday 20 October 2010)
© 2011 Bryan Costales
Creative Commons License
#BCY_2304


The shell of the Scale-sided Piddock is in overlapping plates, the rear end of which has groved ridges intended to wear down sand or soft rock to create a burrow for safety.


Scale_Sided_Piddock_20101020_163351_BCY_2305.jpg

Neck Visible
(2 of 3) (627 views)

Scale-sided Piddock (Parapholas californica)
Monterey Bay Aquarium internal link
886 Cannery Row, Monterey, California
(Photo posted Saturday 19 November 2011)
(Photo taken 16:33:51 Wednesday 20 October 2010)
© 2011 Bryan Costales
Creative Commons License
#BCY_2305


Normally its neck is out and exposed so that it can gather food. If something were to threaten, it would withdraw back into his burrowed shell.


Scale_Sided_Piddock_20101020_163355_BCY_2306.jpg

Neck Larger Than Opening
(3 of 3) (611 views)

Scale-sided Piddock (Parapholas californica)
Monterey Bay Aquarium internal link
886 Cannery Row, Monterey, California
(Photo posted Saturday 19 November 2011)
(Photo taken 16:33:55 Wednesday 20 October 2010)
© 2011 Bryan Costales
Creative Commons License
#BCY_2306


Sometimes, as here, the neck is larger than the opening in the end of its shell. This can provide greater protection when the neck is withdrawn, because the opening is even smaller than normal.


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