Playa de los Bikinis, Coastal beach in Santander, Spain

Playa de los Bikinis is a 250-metre beach of golden sand on the south-east side of the Península de la Magdalena, in the bay of Santander. A stone and concrete jetty built in the late 1960s, known as "el muro", crosses the shore and reaches about 200 metres into the sea, with large arches that bathers walk through. At high tide the eastern end disappears and the rest narrows to a few metres; at low tide rocks are exposed.

The name came from international students at Universidad Internacional Menéndez Pelayo who introduced bikini wearing during the 1960s. This period marked a shift in how locals and visitors used the shoreline.

The name comes from the first bikinis seen in Spain: from the 1960s, female students at the Universidad Internacional Menéndez Pelayo, which stands near the beach, came down to bathe in them, causing a stir in Santander. The original spelling is kept because the word was not yet part of Spanish when the beach was named.

Access is by small stairs or wide ramps; cars cannot enter the Península de la Magdalena, and the nearest car park is at Playa del Camello. Lifeguards cover 22 June to 22 September, with showers, foot-wash taps and bins. At high tide the eastern end vanishes and the rest narrows to a few metres; at low tide rocks are exposed.

The stone and concrete jetty at the beach, known locally as "el muro", was built in the late 1960s and runs about 200 metres into the sea to the south. Large arches in it let bathers walk through, and to the north it disappears under the sand before the beach ends.