Beneath the sparkling waters of the world's seas is a realm of fascinating creatures. This series explores six marine animals with a detailed discussion of their species, forms, habitats, behaviors, and life cycles.

For a creature with no brain and no heart the jellyfish has done remarkably well. They are found from Antarctica to the tropics, in shallow waters or 12,000 feet below the ocean's surface.

The moray eel looks scary and this creature's sharp fangs can deliver a painful bite. However, this snakelike creature that is often brightly colored to match the colors of the coral reef will not harm those who do not bother it.

The octopus is an intelligent animal with a number of clever abilities. To hide or escape from predators it can squirt a cloud of ink, change the color or texture of its skin, or squeeze into a tiny space that is just about the size of its eye.

These creatures are hard to find when they swim among the plants of their natural habitat. If in fact the two species of sea dragons are known as weedy and leafy because they look so much like the plants in which they make their homes! This creature has a long snout that gave rise to the name sea dragon.

They are the Picassos and Rembrandts of the ocean. These small slugs come arrayed in a variety of stunning colors and feathery gills which have earned them the tribute "Jewels of the Sea."

Stingrays spend most of their lives resting on the seafloor. These gentle creatures, which resemble large pancakes, possess electrosense. This sense allows them to hunt for creatures that are buried under the sand and not moving.