Common Southern Cockle

Fulvia tenuicostata

A species of cockle shell which is sometimes found in large numbers on the sea floor around much of the coast of Australia and particularly in the south-east.
Thin-ribbed Cockle (Fulvia tenuicostata) This was one among many shells on the shore however, it had a neatly drilled hole with beveled inner edge on the part where the cockle would have been most fleshy. I found a few of these shells with holes as I walked along the shore. Investigating further, I found that these holes were made by the predacious Sordid Moon Snail (Polinices sordidus). Although I could not find the snail I found tracks on the sand. The snail would have drilled through the cockle shell and feasted on the flesh within.
My next spotting shows the egg mass of this snail, a common sighting in these parts.
http://www.jungledragon.com/image/36896 Australia,Cardium racketti,Common Southern Cockle,Fulvia tenuicostata,Geotagged,Summer

Appearance

A light, fragile and brittle bivalve usually white to cream in colour, some with pink near the apex.
Sculpture of over 50 fine radial ribs. SUp to 6 cm across.

Naming

Hemicardium tegulatum Dautzenberg, 1900
Cardium tenuicostatum Lamarck, 1819
Cardium racketti Lamarck, 1819
Fulvia fagea Lamarck, 1819
Regozara racketti (Donovan, 1825)
Fulvia racketti Lamarck, 1819
Papyridea tenuicostatum (Lamarck, 1819)
Cardium radiatum Reeve, 1845

Distribution

Most of the southern, western and eastern coasts of Australia but particularly common in the south-east.

Status

Least concern

Habitat

Shallow seas.

Predators

Moon snail

Uses

Not used commercially.

References:

Some text fragments are auto parsed from Wikipedia.

https://bie.ala.org.au/species/urn:lsid:biodiversity.org.au:afd.taxon:17113a56-c401-46b0-a00a-43f55595348d#overview
http://www.marinespecies.org/aphia.php?p=taxdetails&id=605737
http://www.molluscsoftasmania.net/Species%20pages/Fulvia%20tenuicostata.html
Taxonomy
KingdomAnimalia
DivisionMollusca
ClassBivalvia
OrderCardiida
FamilyCardiidae
GenusFulvia
SpeciesFulvia tenuicostata
Photographed in
Australia