Serendipity the Pink Dragon was a 1983 anime (original title Serendipity Monogatari Pure to no Nakamatachi - Serendipity Stories: Friends on Pure Island) that was adapted into a movie in 1989. The story follows Bobby, (or Kuno in Japanese), a young boy who is shipwrecked in the Antarctic. He finds a pink egg and floats on it out to a magical island, where the pink pleisiosaur Serendipity hatches. The island where she lives is endangered by the threat of humans coming when Captain Smudge realizes there is gold on the island.The original anime, and the movie made from it, was based on a series of children's books called, oddly enough, Serendipity Books. Each book was designed to deliver An Aesop, such as "Enjoy being you," "Treat others the way you want to be treated," and "Not everyone enjoys the same things."
Tropes used by Serendipity the Pink Dragon: