Did you know... a baby California gray whale weighs over 1,000 pounds? Their ancestors have been on earth for over 30 million years? They travel over 10,000 miles every year? Read about the California gray whale's fascinating past and environmental concerns for its future. Although 'What is a California Gray Whale?' is designed for primary grade children, it is of interest to older children studying nature and may also be read to and enjoyed by preschoolers.