Catalinas Islands

It's a places in Costa Rica where with a little bit of luck you can get this kind of images, a giant manta ray, 6 meters wide on a 30 mts clear water.
Normally this dive site does not have good visibility but into the correct season you may have an amazing dive with this incredible, friendly and giant animal. In Mata Palo beach at the Hotel Riu Guanacaste is Scubacaribe dive Center that offers you these trips.

The manta ray (Manta birostris) is the largest species of the rays. The largest known specimen was more than 7.6 metres (25 ft) across, with a weight of about 2,300 kilograms (5,100 lb). It ranges throughout tropical waters of the world, typically around coral reefs. They have the largest brain-to-body ratio of the sharks and rays

Mantas feed on plankton, fish larvae and the like, filtered from the water passing through their gills as they swim. They catch small prey organisms on flat horizontal plates of russet-colored spongy tissue spanning spaces between the manta's gill bars.

Manta rays frequent cleaning stations where small fish such as wrasse, remora, and angelfish swim in the manta's gills and over its skin to feed, in the process cleaning it of parasites and dead tissue.