I am trying to recall a movie I'd seen circa early 90's (via a pre-'tweenified' Disney Channel) and what I recall of it involved kids on a beach or some kind of coast discovering a magical creature (not a mermaid, sea serpent or anything like that, but I want to say it was definitely more like an animal) and are trying save it/return it to the ocean(?), so maybe it was bordering on being eco-conscious as well.
What else I know about it that it was early 80's (for some odd reason, 1983 screams out the most) and that it was European, more specifically I want to say Scandinavian (and I've tried looking for Sweden, Finland, Denmark, The Netherlands... Don't think it'd be from either Greenland or Iceland).