- Dolphins have a “signature whistle” which allows others to recognize them.
- There are many accounts of dolphins helping humans and even whales.
- Dolphins live in groups and cooperate with each other to get food and raise offspring, called calves.
- Dolphins play-fight with each other and also play with seaweed. They have also been known to play with other animals such as dogs.
- Dolphins sleep by resting one side of the brain at a time. This allows them to continue rising to the surface for air and to keep an eye open to watch out for predators.
- Dolphins use echolocation to find food and navigate. This is a natural version of radar.
- Dolphins can jump as high as 20 feet out of the water.
- The “killer whale”, or Orca, is actually a dolphin.