They are an important food source for many marine predators, including whales and dolphins.

Sardines get their name from the Italian island of Sardinia where they were once abundant.

Scorpions glow under ultraviolet light due to fluorescent chemicals in their exoskeletons.

They can survive for months without food by slowing their metabolism.

They breathe through their anus by pumping water in and out of their respiratory tree.

Sea cucumbers can eject their internal organs as a defense mechanism and later regenerate them.

They are intelligent and can be trained to perform complex tasks.

Sea lions can rotate their hind flippers forward to walk on land.

Sea otters have the densest fur of any animal, with up to 1 million hairs per square inch.

They use rocks as tools to crack open shellfish while floating on their backs.

Sea turtles can migrate thousands of miles between feeding and nesting grounds.

They return to the same beach where they were born to lay their eggs.