Perfectly-timed Photo - golden stingray migration off the Mexican coast photographer Sandra Critelli
A large fish swims in the middle of a huge shoal of smaller fish off the coast of Eden Rock, in Grand Cayman - this won the bronze award in the Wide Angle Unrestricted category Underwater Photographer of the year
The giant hammerhead shark swims in the shallows off Destin, Florida, chasing after its next meal while two oblivious swimers bask in the crystal clear water just feet away.
'The sea is heavy as oil. Giant creatures pass, dragging the sea into shock waves. The creatures are rarely seen except in green flashes of phosphorescence.
Tubarões no fundo do oceano.