If I ever had a chance or was forced to live underwater for two years, I would prefer to be dolphin for those two years. It is not because that dolphin is some kind of super hero of sea or because I know a lot about dolphins. This is because I like dolphins. They are harmless and friendly. After a lot of researches, it was proven that dolphins are the most intelligent creature in the sea. They don’t have eyes but they have a built in system with which they work and move. This system is used by submarine these days.
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