From the reef to the open ocean, some marine animals have found ways to ease the daily rigors of survival in the underwater world by joining forces. Symbiotic and commensal relationships sometimes create mutually beneficial relationships for wildly dissimilar creatures — much to the entertainment of divers.

Is it OK to touch marine life or feed sharks when diving? Two experts discuss.

Ocean photographer and marine biologist Brandon Cole is releasing a new book with writer and researcher Scott Michael entitled Reef Life: A Guide to Tropical Marine Life, which will be available on Amazon.com.

The ocean just got a lot safer for five species of sharks and two species of manta rays – good news for divers who enjoy diving with these creatures. On March 14 in Bangkok, Thailand, an international organization that regulates the trade of endangered species, the Convention on International Trade in Endangered Species (CITES), placed new restrictions on the capture of five species of sharks, including oceanic white tips, porbeagles, great hammerheads, scalloped hammerheads and smooth hammerhead, as well as oceanic and reef manta rays and three species of freshwater stingrays.

Here for your enjoyment: A collection of eels from around the globe, photographed underwater by the members of ScubaDiving.com's Forum.

This Belize dive shop owner was honored as a Sea Hero in 2012 for her dedication to children and the ocean planet.

Sleight-of-hand masters or eight-legged freaks? Octopuses can be both: See for yourself, then let the four select smoke-and-mirrors masters mesmerize you at these hotspots.

In 2012, Sea Hero Casey Sokolovic was awarded an Oris Watch for her efforts in conservation, protection and love for the ocean and its life.

Whale sharks are the stuff of divers' dreams. Where are the best places to get in the water with them? Here's where to increase your odds.