Six orphaned seals that were brought up in captivity have been released back into the wild and scientists are using satellites to keep an eye on them.
The seals were found six months ago and weren't very well but the RSPCA has fed them and looked after them since.
Now they're well enough to go back to the sea, but the RSPCA is going to keep an eye on them in the sea.
They've glued transmitters to their fur - that won't hurt the seals - so they can check they're getting on OK.