Behavioral control of swash-riding in the clam Donax variabilis.

From: The Biological Bulletin | Date: October 1, 1995| Author: Ellers, Olaf | Copyright information

Clams of the species Donax variabilis migrate shoreward during rising tides and seaward during falling tides. These clams spend most of the time in the sand, emerging several times per tidal cycle to ride waves. Migration is not merely a passive result of waves eroding clams out of the sand; rather clams actively jump out of the sand and ride specific waves. Such active migration is experimentally demonstrated during a falling tide by comparing the motion of dead and live clams; live clams em...

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