Whale's eye view of the seas from camera on back
19 April 2017 Last updated at 10:42 BST
Now take a look at this American and Australian scientists have found a pretty cool way of learning more about whales who live in the Antarctic.
They've attached a waterproof camera to the backs of whales using suction cups.
The footage shows what the whales get up to and what they see.
Take a look.
Pictures from the WWF