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Sea stars pump seawater instead of blood

Sea stars are not fish, and they move nutrients through their bodies with seawater instead of blood.

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They have no gills, scales, or fins. Many have five arms, but some species have 10, 20, or even 40.

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Japanese giant salamanders grow five feet long

The Japanese giant salamander is the world's second-largest salamander, reaching up to 5 feet and 55 pounds.

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Jellyfish are about 95 percent water

Only about five percent of the body of a jellyfish is solid matter. The rest is water.

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A narwhal's tusk is a tooth

Male narwhals have a tooth that grows into a long, clockwise-spiraled tusk.

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