Oceans (Cambridge International IGCSE Environmental Management)

The world’s oceans

• Oceans are very large expanses of sea (saltwater)

  • They represent the main areas into which the sea is divided geographically

• There are five recognised oceans:

  • Pacific Ocean
  • Atlantic Ocean
  • Indian Ocean
  • Arctic Ocean
  • Southern Ocean

A map of the world showing the seven recognised continents and five recognised oceans

• There are also many recognised seas on the planet, such as:

  • Mediterranean Sea
  • Black Sea
  • Irish Sea
  • Dead Sea
  • Caribbean Sea

• Seas are smaller areas of water than oceans and they are often partially enclosed by land