Height = 56mm.
<em>Acanthocardia tuberculata</em> (Linnaeus, 1758)
Local. Distributed from the Irish Sea to the Iberian Peninsula and into the Mediterranean and the Canaries.
Burrows in muddy sand and gravel from low water to 100m where it filters phytoplankton.
Shell up to 90mm lomg, 90mm high, 70mm wide, juveniles round, adults roundish, becoming slightly produced posteriorly and with a slight keel, not produced anteriorly.