What it's like to swim with orcas—or killer whales—in Norway's Troms region aboard *Sula* liveaboard.

A science expert lists his favorite amazing shark facts, including facts about Greenland sharks, bull sharks and more.

Learn how to identify key coral species like the *Isopora Palifera* coral.

Plaza Beach Resort Bonaire

Overfishing and bycatch pose major threats to many marine species—this former fisherman hopes to bring these conservation issues to the forefront.

Learn how to identify key coral species, starting with pocillopora corals, also called cauliflower coral.

Cayman Islands