Blue Room is a partly submerged sea cave where sunlight passing through the entrance turns the water and limestone walls an intense blue. It lies below cliffs northwest of Playa Santa Cruz and is reached by boat or by a coastal walk followed by a swim.
The low entrance, surge, and open-water approach make conditions important. Do not treat it as a casual cave walk: use a competent local operator or get current advice on the shore route, and skip the swim when the sea is rough.