Dolphins
are marine mammals, very good swimmer, intelligent, cute and kind and playful.
They can swim very fast like 55.5 kilometers/hour (around 34.5 miles/hour).
Man (world record) can swim around 7 kilometers/hour (for just first 100 m).
Sometimes they like to swim and jump beside the boat to compete or play with us.
They like to eat fish and some other small marine lives. They can also use their Biosonar