A fact-packed introduction to the wonders of the sea with easy-to-read text and superb photographs. Subjects include coral reefs, whales and dolphins, undersea exploration and environmental threats. With internet links to exciting websites, including a virtual tour of the seabed and downloadable images of weird and wonderful sea creatures.

Chapters in this book include:
- Seas and oceans
- Underwater life
- Who eats who?
- Hiding
- Coral reefs
- Coral reef animals
- Living together
- Poisonous animals
- Sharks
- Rays
- Whales
- Dolphins
- Deep sea
- On the move
- Cold oceans
- Waves
- Currents
- Tides
- Coasts
- Seashore life
- Dangerous seas
- Boats and ships
- Exploring the depths
- Unknown seas
- Shipwrecks
- Using the oceans
- Dirty oceans
- Emptying the oceans
- Getting warmer
- The future of the oceans
- Undersea facts and records

Illustrated by: David Hancock