When survival is the goal, greater security comes with numbers. Here, we're taking a closer look at schools and shoals—plus, we'll tell you how to capture the best underwater photos.
The Hercules ROV (Remote Operated Vehicle) was exploring the coast of Louisiana when it came across a curious sperm whale nearly 600 meters beneath the surface.
In this dramatic video, divers with Stuart Cove's Dive Bahamas remove a rope that had entangled a shark — after the shark appears to ask them for help.