Includes index.

"First published in this format in 2003"--Title page verso.

How big is the ocean? -- Which is the biggest ocean? -- What's the difference between a sea and an ocean? -- Why is the sea salty? -- Is the Red Sea really red? -- What did sailors fear the most? -- Who first sailed around the world? -- What is sand made of? -- How are caves made? -- Why do limpets cling to rocks? -- Which fish has headlights? -- How deep is the ocean? -- What makes chimneys under the sea? -- What's it like at the bottom of the sea? -- Are there mountains under the sea? -- How do fish breathe under water? -- How do fish swim? -- Which bird flies under water? -- Which animal is jet-propelled? -- Which animal loves to play? -- How do whales and dolphins use sound to see? -- Which sea animals sing like birds? -- What makes waves roll? -- Are there rivers in the ocean? -- Why do sailors watch the tides? -- Where do angels, clowns, and parrots live? -- What is a coral reef? -- Where is the biggest reef? -- Which is the biggest fish? -- Which is the fastest fish? -- Which is the biggest crab? -- Which fish hunts with a hammer? -- Which is the most shocking fish? -- Which fish look like stones? -- How deep do submarines dive? -- What dives deepest -- Which was the deepest dive ever? -- Who fishes with fire? -- Are there farms under the sea? -- Are there jewels in the sea? -- Index.

Questions and answers about the Ocean.