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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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Jellyfish have no brain, blood, or heart, and their bodies are made of three layers. Taken out of the water, one collapses into a blob.

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Open NOAA Ocean Service

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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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Beluga whales can nod and turn their heads

Unlike other whales and dolphins, belugas have neck vertebrae that are not fused, so they can nod and turn their heads.

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Pronghorn can run 55 miles per hour

A pronghorn can run at a top speed of around 55 miles per hour.

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