Bajo De Dentro

Bajo de Dentro is a seamount inside the Islas Hormigas marine reserve off the Spanish Mediterranean coast, a reserve protected since 1995. The seamount drops from a few metres below the surface to well past 40 m (131 ft) and draws big schools of pelagic fish.

It is covered in gorgonians and sponges, and the sheer numbers of fish are what divers remember. Barracuda and dentex hang in the blue, groupers sit under ledges, and eagle rays and sunfish pass through in season.

Diving in the reserve needs an official permit, and the deeper seamounts require Advanced Open Water certification. Currents can be present, so good buoyancy helps. Visibility is typically 8 to 20 m (26 to 66 ft) and is best in summer.