Are Dolphins fish or mammals?
They are mammals.
Can dolphins whistle?
Each dolphin whistles to let other dolphins know who it is.
How do dolphins breathe?
They breathe through a blowhole on top of their heads.
What can say to you about dolphins' age?
rings on their teeth
What does dolphins' skin look like?
like a bar of a slippery soap
What do dolphins eat?
They eat fish, squid and crustaceans.
What threats do dolphins face to their survival?
Humans, pollution
How do dolphins swallow their food?
They swallow their food whole.
How many types if dolphins are there? more than 15? more than 30?
There are more than 30 types of dolphins.
Why do lots of dolphins die each year?
Hungry sharks eat dolphins. The dolphins are killed in fishing nets.