Playa de la Muralla, Puerto Sherry

What Seaglassmap found here

The small rocky strip west of Puerto Sherry marina, under the ruined wall of the Santa Catalina fort. Go at low tide: that is when the water drops far enough to let you walk out through the rocks and the fallen towers, and when the beach joins up with neighbouring La Calita. It is not a long stretch, and a local who has combed this coast for years reports getting caught by the returning tide before finishing it. Browns, greens and whites are the everyday find; this is also the corner she rates for deep teal and turquoise. Watch the tide table, not the clock.