Editing Cockle (bivalve) (section)

==Species==
There are more than 205 living species of cockles, with many more fossil forms.<ref>{{cite web |url=http://shells.tricity.wsu.edu/ArcherdShellCollection/Bivalvia/Cardiidae.html |title=Cardiidae (Cockles) |publisher=Shells.tricity.wsu.edu |access-date=2012-10-13 |archive-url=https://web.archive.org/web/20120304223538/http://shells.tricity.wsu.edu/ArcherdShellCollection/Bivalvia/Cardiidae.html |archive-date=2012-03-04 |url-status=dead }}</ref>

The [[common cockle]] (''Cerastoderma edule'') is widely distributed around the coastlines of [[Northern Europe]], with a range extending west to [[Ireland]], the [[Barents Sea]] in the north, [[Norway]] in the east, and as far south as [[Senegal]].

The [[dog cockle]], ''Glycymeris glycymeris'', has a similar range and habitat to the common cockle, but is not at all closely related, being in the family [[Glycymerididae]]. The dog cockle is edible, but due to its toughness when cooked it is generally not eaten, although a process is being developed to solve this problem.<ref>{{cite web|author={\phi_s} |url=http://www.springerlink.com/content/r63k184f35lanf19/ |title=European Food Research and Technology, Volume 210, Number 1 |publisher=SpringerLink |access-date=2012-10-13}}</ref>

The blood cockle, ''[[Tegillarca granosa]]'' (not related to the true cockles, instead in the ark clam family, [[Arcidae]]), is extensively cultured from southern [[Korea]] to [[Malaysia]].<ref>{{cite web|url=http://www.fao.org/docrep/field/003/AB718E/AB718E01.htm |title=Status of mollusc culture in selected Asian countries |publisher=Fao.org |access-date=2012-10-13}}</ref>