There was a boy and a seal I believe, I remember there were villians that kept trying to poach animals including the seal.. I believe that it might have come on HBO, or Cinamax

Was it a cartoon?
Sounds like,.

Seabert

-view- (https://www.youtube.com/watch?v=HX7B3lFgKW0)
---

OMG... I think that is it! Thank You