Blue Worlds: The Indian Ocean

The Indian Ocean is Earth's third largest ocean, connecting Africa with Asia and Australia. Its warm waters are filled with unique wildlife visiting its famous islands, colourful coral reefs, and dense mangrove forests. Many major cities surround the Indian Ocean, and the ocean is an important part of life for their inhabitants, who often work in shipping, tourism, or fishing. However, the Indian Ocean is particularly at risk from rising sea levels, as much of the surrounding land is low-lying and floods are a constant threat.

The oceans make up Earth's largest habitat. More than 70 per cent of Earth's surface is covered by oceans and seas, and they hold more than 97 per cent of Earth's water supply. Oceans drive the world's weather, provide half of the oxygen we breathe, and offer food and livelihoods for more than a billion people.

Blue Worlds explores each of the world's five oceans and major seas in detail, looking at the distinct features—from wildlife and weather to landscape—that make them all individual and unique. It also examines the threats they face, such as global warming, overfishing, and pollution.

• The world's oceans
• Indian Ocean tour
• Seas, bays, gulfs and straits
• Coasts and islands
• Winds, currents and waves
• Indian Ocean explorers
• Indian Ocean wildlife
• The Ganges Delta
• Life on Madagascar
• Indian Ocean plants
• People and transport
• Indian Ocean riches
• Indian Ocean in danger
• Indian Ocean facts
• Glossary
• Index