Introduction Of the many creatures that live in the sea dolphins are among the best known There are lots of things about dolphins that will surprise you though Dolphins are mammals All mammals are warm-blooded or endothermic animals That means they can keep their bodies at a steady temperature Like you and me dolphins have a bony skeleton and breathe air Dolphin babies drink their mother’s milk Dolphins love to mix with other 3 Some dolphins love riding on waves as surfers do This may help them save energy but they probably also do it just for fun
5 DOLPHINS dolphins Many live in groups of several thousand Dolphins spend most of their lives in the water In the same way that submarines navigate using sonar dolphins use sound to map their surroundings and hunt with great accuracy This ability is called echolocation Dolphins at work The U S Navy uses dolphins to find explosive mines search for people lost at sea and to carry tools to underwater sites The U S Navy’s Marine Mammal Program was set up to study how dolphins can swim so fast The navy wanted to use this information to improve submarine torpedo and ship designs It soon realized that dolphins had many other useful skills Dolphins at play In the ocean dolphins often leap high out of the water They sometimes catch jellyfish and then use their tails to toss them into the air like a ball Spinner dolphins leap out of the water and spin right around like a top 2 Dolphins are very inquisitive They always want to know what is happening around them
