From breaching great white sharks to electrifying cuttlefish, Justin Gilligan's underwater images are nothing short of mesmerizing.

These are some of our favorite animal-behavior images submitted in the 2016 photo contest. It's not too late to enter your photos in the 2017 contest!

We just can't get enough of these nudibranch photos from the 2016 *Scuba Diving* magazine photo contest.

View some amazing over-under images submitted in the 2016 photo contest. It's not too late to enter your photos in the 2017 contest!

This underwater photographer has a unique approach that we cannot get enough of. See his incredible photos here.

This underwater photographer loves inspiring others through his incredible photos in hopes they too will get out there and embrace the ocean.

Check out these stunning images from the heart of the anemone. Featuring clownfish, vibrant reefs and some of the best underwater photography around.

For World Whale Day 2017 *Scuba Diving* is celebrating with some of our favorite whale pictures from our 2016 photo contest.

Rodney Bursiel's underwater images caught the attention of *Scuba Diving* magazine editors in the 2016 Through Your Lens photo contest. Enter our 2017 contest NOW at scubadiving.com/photocontest.