On board a vessel that would make Jacques Cousteau green with envy, the Cat and Co. take to the high seas in search of whales, dolphins and porpoises, those aquatic mammals known as cetaceans. While learning how cetaceans stay warm without hair, have teeth or baleen, swim in troops, spyhop, spin, breach and see via echolocation; kids are introduced to almost 20 different species-including sperm, right, humpback and blue whales; Gulf, spectacled and finless porpoise; and boto, common, hourglass and bottlenose dolphins.