An investigation of the movement of the scallop, Pecten maximus

Abstract

1. In the experimental area specimens of the scallop, Pecten maximus, occur at a density of one every 1 1/2 m2. Over 90% are recessed in the bottom. 2. Unrecessed specimens remain in the same position on an average for 6 days. Recessed specimens remain on an average 27 days. 3. The experimental area has virtually unidirectional tidal flow. The scallops tend to orientate themselves on the bottom so that this flow complements their ciliary currents. © 1967 Biologischen Anstalt Helgoland.