*kids should like this as much as I did *promote interspecies communications!

From Wikipedia (which has said image of dog riding a dolphin's back across a sunset)

This is a film about a boy, Jordan, and his dog Zeus. A marine biologist, Mary Beth, who is a single parent and leads a hectic life with her two impossible daughters, Judith and Nora. She, along with her partner Becky, are trying to study and save a beautiful dolphin named Roxanne. Unfortunately, Mary Beth's greedy partner, Claude Carver, tries to capture the dolphin and sell her. Terry finds out that he has relationships with Mary Beth, and they start going out, under the watchful eyes of the kids. Zeus stows away one day on one of Mary Beth's boat trips, which really annoys Mary Beth. However, when she finds out that the dog and the dolphin can do "interspecies communication," she is intrigued and curious. In the end, it's a race to save the dolphin and Zeus, who was kidnapped by Claude. At the end Claude gets caught by Becky, and gets peed on before he gets arrested. In the end Terry marries Mary Beth, and Roxanne finally finds a pod to live in, and has to say goodbye to Zeus.