It's always a thrill to dive with large schools of fish. Check out Judy G's gallery of schooling fish from Mexico, Thailand, Fiji, Costa Rica and Indonesia.

Oceanographer Carrie Manfrino works in Little Cayman Island to protect and grow coral reefs. For that, she is a Scuba Diving Sea Hero.

Think you know all about underwater creatures? Watch as comedian Ze Frank narrates this True Facts video on Cuttlefish.

Do you love polka dots? What about on underwater animals? From octopuses to shrimps to eagle rays and more, we've got a photo gallery of all your favorite spotted critters!

What is it like to scuba dive with one of the largest animals on earth? Vanessa Mignon tells of her experience in Tonga with humpback whales.

What killed nine blue whales in Newfoundland? Read here to find out what experts think.

Do you want to learn more about shark and manta conservation? In Lombok, Indonesia, an illegal fish market has become a battleground for shark and manta conservationists. Read what's being done to save these underwater animals.

Colorful Christmas tree worms can provide a meal ticket for yellownose gobies in the southern Caribbean.

South Carolina's Hammock Coast is a wreck divers' playground, with sunken ships that range from a Civil War-era paddle-wheeler to a World War II Liberty ship. Grab your gear and make your next dive trip to this awesome destination, where wrecks and history abound!