San Gregorio State Beach is a beach near San Gregorio, California, USA, south of Half Moon Bay. San Gregorio Creek widens to form a small freshwater lagoon in the park behind a sand berm, or barrier beach, which typically blocks the mouth of the creek, forcing the creekwaters to flow underfoot as they seep into the Pacific Ocean. During the rainy season the creek often cuts through the sand berm and flows directly into the ocean. A stone marker with a plaque commemorates the three days Spanish explorer Gaspar de Portolà's expedition camped at the beach to rest and treat their sick in 1769, during their failed attempt to reach Monterey Bay. They would go on to discover San Francisco Bay instead.
Davenport Cove is locally known by several different names including Shark Fin Cove and Shark Tooth Beach because of the huge rock in the mouth of the cove that looks like a shark fin or tooth depending on where you are standing. When you see the fin coming out of the water, you will quickly realize where it got its name and will be transported into a magical world where things like this actually exist. This is a sandy beach in a small deep cove south of the town of Davenport. Another unique feature of this beach is the large rock arch tunnel that you can walk into. At low tide you can get all the way through it. On the way into the cove there is an old mining tunnel that looks like a deep cave.