Dolphins are sea mammals. They have to breathe air or they will die. They are members of the corphaenidae family.
Dolphins hunt together in a group. A group of dolphins is called a pod. They eat fish, shrimp and small squid. They live in salt water oceans. Dolphins can hold their breath for six minutes.
Dolphins have smooth bare skin. Only baby dolphins are born with a few bristly hairs on their snouts. These hairs soon fall out. They have a long tail and the fin on top their backs keep the dolphins from rolling over. The female dolphins have a thick layer of fat under their skin to keep them warm when they dive very deep. The dolphins’ front fins are called flippers. They use them to turn left and right. Dolphins grow from 2 to 3 meters long and weigh up t 75 kilograms.
When dolphins hear or see a ship close by, they go near it and follow it for many kilometers. Dolphins can leap out of the water. Sometime they invent their own tricks and stunts after watching other dolphins perform.
Dolphins are very friendly to people and have never harmed anyone. They are very playful mammals.
Answer the following questions:
- Why are dolphins considered as mammals?
- How can dolphins not roll over?
- Mention the main parts of a dolphin’s body.
- What do dolphins eat?
- Do you think dolphins are clever and friendly? Provide evidence.