Ostrea lurida spat swim with their foot superior to the rest of their body.
2.
"Ostrea lurida " oysters live in bays and estuaries.
3.
"Ostrea lurida " oysters lie with their left valve on the substrate, where they are firmly attached.
4.
"Ostrea lurida " populations are much more stable now due to the action of conservancy associations and new laws.
5.
Most of the shells are from oysters ( Ostrea lurida ) which occurred in large oyster reefs throughout the San Francisco Bay area.
6.
However, previously, for a period of time, " Ostrea lurida " was considered to be merely a junior synonym of " Ostrea conchaphila ".
7.
There was previously some disagreement about whether this species was distinct from " Ostrea lurida ", the Olympia oyster, a species which lives north of Baja California.
8.
"Ostrea lurida " is now known to be separate from a similar-appearing species, " Ostrea conchaphila ", which occurs further south, south of Baja California, in Mexico.
9.
Extensive beds and shoals of oysters ( Ostrea lurida ) and other shellfish then lay in shallow water near the shores of San Francisco Bay and Tomales Bay and were a food source used for centuries.
10.
At least one species within this genus, " Ostrea lurida ", has been recovered in archaeological excavations along the Central California coast of the Pacific Ocean, demonstrating it was a marine taxon exploited by the Chumash people as a food source.
