From albatross that fly high above the water to Earth's largest animals that make their homes deep in the sea, the ocean is home to hundreds of species of birds and mammals. Discover how each species survives and succeeds in its ecosystem, and learn how people are working to protect endangered species throughout the ocean. Engaging text and extraordinary photos let readers dive deep into the wild world of the ocean, and included comprehension questions ensure a well-rounded understanding of life beneath the waves.