Live-action underwater footage captures the lives of several whale species, including blue whales, southern right whales, humpback whales, sperm whales, and California gray whales. Whales are shown gulping huge amounts of krill or crustaceans or hunting for prey on muddy ocean bottoms. The migrations of gray whales are compared with the "stay at home" habits of other whales, which tend to remain year-round in the Caribbean or southern Atlantic oceans. All of the whales are shown nurturing their young and traveling in pods.
