<P> The north central coast's new marine protected areas were designed by local divers, fishermen, conservationists and scientists who comprised the North Central Coast Regional Stakeholder Group . Their job was to design a network of protected areas that would preserve sensitive sea life and habitats while enhancing recreation, study and education opportunities . </P> <P> The north central coast marine protected areas took effect on May 1, 2010 . </P> <P> Estero de San Antonio SMRMA is a marine protected area 1.5 miles north of Dillon Beach in Marin County on California's north central coast . The Estero springs just north of the Marin - Sonoma county line and meanders south and west until emptying into Bodega Bay . </P> <P> Estero de San Antonio SMRMA includes the waters below the mean high tide line within Estero de San Antonio westward of longitude 122 ° 57.40' W . </P>

Estero de san antonio state marine recreational management area