food
dolphins can have many resources! there is Hawii, the Atlantic and Pacific Oceans, Bahamas ( if i spelled it right :P ).
to study dolphins
dolphins do use them. they use them to catch fish and to tear things apart.
They use echolocation!
No.
Bats and Dolphins both use sound to navigate.
Dolphins are free swimming and don't use any shelter.
yes
no kid
Yes, dolphins use sound, which is a kind of vibration, to speak, and also to navigate by means of sonar.
because is dark in the sea, so the dolphins can't see. the dolphins use ultra sound to navigate and to hunt for pray, like a bat does.
Dolphins are super smart and the navy has been able to use them.