Ivan Tors produced many films and TV shows that nudged the audience to treat other species with respect and wonder. This was a novel film in its time that introduced audiences to the "Killer Whale" as a potential friend rather than threat. Based on a true story and very well made (lots of great location photography). The cast is low-key and everything is handled in a convincing manner. This was typical of the Tors approach. It's well-done material- not overly sentimental, with a respect for science and a plea to evolve as a species. It's the sort of movie that one doesn't see these days in a sea of CGI fantasy and family films that are merely bad comedy. Seeing this as a kid it made a lasting impression.