The Dawn of the World, by C. Hart Merriam, , at sacred-texts.com
The Olamentko of Bodega Bay say:
Coyote-man brought Koo'-tah the big clam, from which pis'-pe the shell money is made, and planted it here at Bodega Bay. 23 This is the place and the only place where the big clam was in the beginning. Wherever else you find it now, the seed came from here. The Tomales Bay people got their seed here.
215:23 The large thick shell Bodega Bay clam from which shell money is made is Saxidomus giganteus.