Did you know that Oceans cover three-quarters of the earth's surface? Actully, the earth has just one big ocean. But it is divided into five main oceans that we call the five oceans. You can sail in a boat from one main area to the other areas, because they're all connected. The Pacific Ocean is the biggest and deepest. The Atlantic is the second biggest. Also there is the Indian ocean, the Antarctic ocean, and the Arctic ocean.
Can you belive that Sharks are fish? I thought they were mammals. Anyway, they ARE fish. But, even though they are fish, they do not have bones like other fish. Their skeletons are made of a tough material called cartilage. It's the same thing thats in human noses and ears. Sharks also have gills. Sharks live throughout the five main oceans. Can you belive that there are 368 known species of sharks! A shark can be as long as your hand ( the seven-inch Spined Pygmy shark)
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