Fishers recently hauled up a surprising catch off the coast of North Africa: a colossal ocean sunfish weighing an incredible 4,400 pounds (2,000 kilograms). At least that's how heavy marine biologists ...

Editor's note: This is part of a series of videos offering an up-close perspective on the animal kingdom. A special 360-degree video camera system was set up in zoos and other facilities to show how ...