Welcome to the ultimate guide to dog-friendly water fun and off-leash beaches in Marin County! From sandy shores to serene lakes, Marin County offers a diverse range of options for you and your furry friend to enjoy. Dive into the crystal-clear waters or let your pup run free on the sandy beaches—all while being welcomed with open paws by these pet-friendly businesses. Whether you're a water-loving duo or just looking for a relaxing day by the shore, these destinations are sure to make a splash with both you and your canine companion.