Some of the earth’s largest mammals don’t walk on land. They swim in the ocean. These sea-dwelling mammals are whales, and they are among the word’s most captivating creatures. The humpback whale can grow up to fifty feet in length. The blue whale is a giant that can grow to a length of one hundred feet. Its tongue weighs as much as an elephant! However, all whales aren’t enormous because the delightful mammals we call dolphins and porpoises are also whales. There are many kinds of whales, from the beluga, with its white skin, to the narwhal, with its seven-foot tusk. Though they live in the sea, whales can’t breathe underwater. They regularly come to the surface to take in fresh air. Mother whales nurse their young, called calves, just like other mammals. Whales also have the ability to communicate with one another. The sound, or song, of the humpback whale is especially beautiful. Join Laurence Pringle as he introduces a variety of whales and describes efforts to save these magnificent mammals from extinction. With bold, realistic illustrations by Meryl Henderson, this journey to the sea unveils the mysterious world of whales.