The document summarizes key aspects of the open sea or world's oceans. It describes how the ocean is spread among three major basins and divided into vertical zones based on depth. It also outlines some of the abiotic factors like temperature, light and pressure that influence the ocean environment as well as examples of organisms found in different ocean habitats, both near the surface and at depth. Threats to the ocean like pollution, overfishing and human impacts are also briefly mentioned.
2. The world ocean covers over 360 million km2 of
the earth’s surface and consists of one
continuous, interconnected mass of water.
This water is spread among three major ocean basins:
Pacific
Atlantic
Indian
