The Tillamook estuary gathers the waters of five rivers together to form Tillamook Bay, the second largest bay on the Oregon coast. Tillamook Bay’s ecological diversity makes it important habitat for a large variety of mammals, birds, fishes, and invertebrates. It is an important site of private oyster farming. For more information about Tillamook County’s estuaries and habitat, you may go to the Tillamook Estuaries Partnership website at Tillamook Estuaries Partnership.