Do you know flipper? do you know who he is? here's a hint: he is grey, lives in water and is very helpful! Yes! that's exactly right! flipper is the dolphin from the television. He's probably the most famous dolphin of all time. He's a very friendly animal who is pleased to help people. His exploits, however, are not an invention. Dolphins help each other all the time. If one of them is sick or injured, they are there for each other. If one is in distress or is threatened, the others dolphins get him to the surface and wait until he is doing fine. Even with people, dolphins are generally friendly. Just like flipper, dolphins help to rescue people from the water. Have you ever seen a dolphin? have you seen how he can jump? dolphins love to jump. They especially like to swim alongside ships and enjoy the Company. If they want, they can swim up to 60 km/H.