Alex, Colgate and Matey were able to rejoin their seal colony after being treated by the RSPCA.
Over half of the seals in their colony were killed by the Phocine Distemper Virus (PDV), which hit the UK last year.
Nursed back to health
For the last six months pups have been released into the wild as groups of them have got better.
One problem with humans raising seals is that the pups don't know how to fish, so once in the wild, they'll have to learn for themselves.
The RSPCA's Keith Miller reckons they'll do fine.
He says "They were very ill when they first came here, but they're all better now."
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