Get this story (it is a great story).
Link from a New Zealand Newspaper, story lifted from "The Week"...
Two pygmy sperm whales that had become stranded on Mahai Beach in New Zealand were guided to safety by a bottlenose dolphin. Rescuers had tried to get the whales back into the sea, but the creatures were too disoriented in the shallow water to get their bearings. Just when it look as if the whales would have to be euthanized to stop their suffering, as dolphin -nicknamed by Moko by residents - apparently heard the whales cries for help, approached them, and guided them through a channel into deeper water. Marine biologist Anton van Helden said it was the first time he had ever heard of such and "inter-species" rescue.