Good question!

Includes index

How much of Earth is covered with water? -- What is an ocean? -- How does water get to the ocean? -- Why is the sea salty? -- How deep is the ocean? -- What are the ocean zones? -- What lives in the ocean? -- Can anything live at the bottom of the sea? -- What's the biggest animal in the ocean? -- What other large animals are out there? -- What's "the rainforest of the sea"? -- How did rubber duckies help ocean scientists? -- Is there a plastic island in the ocean? -- Does the ocean predict the weather? -- What are the world's largest storms? -- How does the Moon move the oceans? -- What causes waves? -- Will the ocean always stay the same? -- Does it matter if the ocean rises? -- How much do we know about the ocean? -- Compare the oceans

Ages 6+

K to grade 3