Tellina radiata:

Sunrise Tellin has an elongated shell, with a length up to 3 inches. The shell is thin but sturdy, with low beaks placed about midway of the shell. Both ends are broadly rounded, posterior a little less so than anterior. Surface smooth and very highly polished. Colour yellowish white, with bands of pinkish rose radiating from the beaks, and commonly visible on interior. Shallow water.