Dolphins are the friendliest sea creatures. They help sailors who are drowning. They too live in a complex society. Furthermore, they behave like humans. For example, dolphins care for sick dolphins. They care for their pregnant mothers and protect the weak. Scientists have suggested that dolphins have a language, perhaps a sign language. These remarkable mammals may be more intelligent than man. Man only claims superiority over them because we can kill them more than they can kill us.
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