Seas and oceans -- Underwater life -- Who eats who? -- Hiding -- Coral reefs -- Coral reef animals -- Living together -- Poisonous animals -- Sharks -- Rays -- Whales -- Dolphin -- Deep down -- On the move -- Cold oceans -- Waves -- Currents -- Tikes -- coasts -- Seashore life -- Dangerous seas -- boats and ships -- Exploring the depths -- Unknown seas -- Shipwrecks -- Using the oceans -- Dirty oceans -- Emptying the oceans -- Getting warmer -- Future of the oceans -- Undersea facts and records -- Index.