Driller Killer

A dawn visit to Cliff end and Fairlight Cove this morning produced no birds of note, but as always inspection of the beach at low tide was interesting.

The photo shows a couple of bivalve shells: the larger one is a Norway Cockle, which has many more rays than the familiar cockles [incidentally in large numbers mixed with mussel shells on the strandline here] and a smooth appearance. These shells can usually be found in small numbers.

The smaller one is the common Banded Wedge Shell [not as I first thought, a Thin Tellin]. This one is interesting because it bears a neatly bevelled hole, showing that it has been predated by a Necklace Shell [Euspirasp], which drills through the shell and sucks out the contents. I haven’t seen  a shell of  one of these lying around on the beach , but here is a link to a picture of the living animal.

http://www.oceaneyephoto.com/photo_411686.html

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