from: Audubon - Richardson Bay Wildlife Sanctuary
Eelgrass, Zostera marina L, is the most widely occurring marine angiosperm in world, growing throughout the west and east coast of the United Sates, Canada and along the coast of Baja California. Eelgrass habitat acts as a protective nursery ground for finfish and shellfish, as an important food source for waterbirds, and as protection to coastal areas against shoreline erosion.
Eelgrass in Richardson Bay
Eelgrass is a true plant (not a seaweed) that grows submerged or partially floating in the marine environment. Eelgrass reproduces through rhizome growth and seed germination. Eelgrass grows on muddy and sandy bottoms in the shallow subtidal environment. Eelgrass beds grow rapidly in the spring and summer, then decay in the fall and winter. Dead eelgrass blades often wash up on the beach where their decay adds crucial nutrients to coastal environments.
Full Article: All About Eelgrass