Gulen Dive Resort and ScubaPixel invite nudibranch lovers, divers and underwater photographers to join the annual Nudibranch Safari in March 2015.

In this epic freediving video, Matthias Misof and his friends take us on their one-breath adventures alongside turtles, manta rays, huge schools of fish and amazing coral heads.

How do use Florida's reefs? Take the Southeast Florida Coral Reef Initiative's survey.

How will your kids be spending their summer vacation?

Here are the winners of the world's best and healthiest marine environments in our Top 100 Readers Choice Awards.

The results of our Top 100 Readers Choice Awards are in! You voted on the world's best destinations for underwater photography, and here are the winners!