1. Teamwork
1.1. Main ideas
1.1.1. every dolphin has its own “name”
1.1.1.1. They “talk” to each other about a lot of things .
1.1.1.2. The name is a special whistel.
1.1.1.3. They also use a system of sounds and body language.
2. U
3. Communication
3.1. Main idea
3.1.1. Dolphins and humans are similar in another way : both species make plans for getting things they want .
3.1.1.1. In the seas of southern Brazil,for example,dolphins use an intelligent strategy to get food.
3.1.1.2. When there are fish near a boat, dolphins signal to the fisherman to put their nets in the water .
3.1.1.3. There is an advantage for them:they get to eat some of the fish that escape from the net .
4. Play
4.1. Main idea
4.1.1. Dolphins are also social animals.
4.1.1.1. They live in groups called pods .
4.1.1.2. They often join others from different .
4.1.1.3. Sciencetists believe playing together is something only intelligent animals do .