In one of the longest migrations of all the animals on earth, the Gray Whale (Eschrichtius Robustus) travels over 10'000 miles to the lagoons of Baja California from its feeding grounds in the Bering Sea off the coast of Alaska. They come to Baja California to breed and give birth to baby whales or calfs, which weigh about 1 ton and average 15 ft in length. Calfs feed off their mother's milk, consuming 50-100 gallons a day, and gaining about 100 pounds each day!

Although they can measure up to 50 ft in length and weigh up to 35 tons, a Gray Whale's diet consists of very small invertebrate animals. In the fridgid waters of the Arctic, these whales scrape the bottom of the ocean floor to pick up amphipods in their baleen, which they then wipe off with their 1 ton tongue in order to feed. They come to Baja California from October to May in order to breed and give birth to their young, who remain with their mothers for about 9 months.

During the last 1 and 1/2 centuries, gray whales were nearly hunted to extinction twice; their populations have recently recovered to around 20 or 22 thousand thanks largely to conservation efforts and the complete ban on whale hunting.