- Dolphins locate objects by using sound. They bounce high pitched sounds off of objects to sense where they are. This is called "echolocation" and it is the way that bats 'see' as well
- Dolphins have sophisticated hearing and navigate and hunt by using sound
- Like whales a Dolphin has a blow hole at the top of its head and must come up to breathe. So a Dolphin normally stays about 10-15 feet from the surface so it can come up to breathe often. However, a Dolphin can dive to over 500 feet if they want to
- Dolphins have a complicated system of communication using clicks and sound. They coordinate their hunting and social group using sound
- A dolphin sleeps with half of its brain shut down and one eye closed
- They have been playing and communicating with people from ancient times and still do
- Dolphins use sonar, because their eyes are on the sides of their bodies. They can't see ahead