Join State Parks docents for a guided nature walk through Pescadero Marsh Natural Preserve. Part of Pescadero State Beach, the marsh is the only extensive wetland along the coast of the San Francisco Peninsula, and includes a complex of several habitats. More than 200 species of birds have been recorded in the marsh, including more than 60 that nest there, among them the Great Blue Heron. Species in the marsh listed under the Endangered Species Act include the San Francisco garter snake, California red-legged frog, tidewater goby, steelhead trout, and Coho salmon.Meet at the Pescadero Trailhead 10 miles north of Costanoa.