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