App: 17cms long  Interesting facts: - Weight: 50 - 75 kg - Size: 150 - 260 cm - Life expectancy: 37 years - Distribution: coastal areas of all oceans - Colour: silver grey 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 other dolphins get him to the surface and wait until he is doing fine. Even with people, dolphins are generally friendly. Dolphins help to rescue people from the water. 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.