From see-it-to-believe-it spawning events to kelp forests you could almost get lost in, the marine life at these destinations simply can't be beat.
Check out this video from an underwater photographer as he comes face to face with a deadly leopard seal. You'll be surprised by what happens.
This scuba diver has dedicated her life to conservation work in the South Pacific and was instrumental in the development of the Cook Islands Shark Sanctuary.
If you're looking for underwater photography, these diving photos are the best of the best. Take a look at the winners of Scuba Diving Magazine's 2013 Photo Contest!
Wide-angle lenses, fast shutter speeds and good spatial awareness all are key in capturing great pictures of sharks.