Easily mistaken species
There are a number of cockle specie in
Sweden, about 8 or 9, but the most common shell that is found on the beach
comes from the Common cockle. On clayey bottoms and where the water has
a low saline content, e.g. The Baltic
and estuaral areas, the similar looking species,Cerastoderma
lamarcki is found. The warped shell has a more slender locking
valve edge and the internal rib grooves are longer than with the Common
Top row: The Common cockle (Cerastoderma
Bottom row:Cerastoderma lamarcki.
The intestines of a flatfish that has been
caught in a shallow bay showing small cockles.
Small cockles are an important source of food for small fish
and shrimps. Even a lot of people think of cockles as a
delicacy and they are fished in many European countries by
raking them up from the seabed.
3 of 3