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The undersea world is very beautiful.Now more and more people want to dive in the water to find the secrets there.Scuba diving is a new sport today.It can take you into a wonderful undersea world.You will find many strange animals in the sea.Some are as large as a school bus.Many sea animals give out light in the dark and some have sharp teeth.During the day，there is enough light.Here，under the sea，everything is blue and green.
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