Native to the Pacific Coast, the Olympia oyster is found primarily in the Pacific Northwest around Washington's Puget Sound. It's very small, seldom exceeding 1½ inches. The Olympia has an excellent flavor and is a favorite for eating on the half shell. Because they are so small, it takes a fair number to satisfy most oyster aficionados. See also oyster.
From The Food Lover's Companion, Fourth edition by Sharon Tyler Herbst and Ron Herbst. Copyright © 2007, 2001, 1995, 1990 by Barron's Educational Series, Inc.