A shark?s sense of smell is so good that it can smell a drop of blood spilled in the water more than 656 ft. away.
A large shark can eat through steel cables.
The chances of being attacked by a shark are 30 million to 1 against; but it can happen in water just 3.3 feet deep.
Some types of sharks live in fresh waters and can be found swimming up rivers.
When sharks feed in groups they seem to go crazy and bite everything in sight, even each other.
The teeth of the Great White Shark are as long as 2 inches and can tear off a human limb in one bite.
Items found inside shark?s stomachs include torpedoes, crates of drinks, and a suit of armor.
Shark?s teeth are as hard as steel and are constantly renewed. Teeth at the front of their mouth are replaced by new ones in the back in a kind of conveyor belt.
The jellyfish is also called the medusa.
Jellyfish range in size from very small (the size of a pea) to about seven feet in diameter.
They get their name from the jelly-like material that makes up their body.
Their mouth is a short tube that hangs down from the center of the body.
Tentacles hang down from the edges of the body. These serve as protection from other animals and also help them catch their food.
Coral is a formation in the sea made of millions of tiny animals.
Each type of coral has its own unique appearance. Some look like trees, antlers, or just crusty globs.
Corals grow in many different colors.
When the animals die, they leave their skeletons behind to form coral reefs.
An octopus has a soft body and eight arms called tentacles.