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About 71% of Earth’s surface is water. If you took all the water on Earth and put it into a ball, it would be about 860 miles wide.
Most of Earth is salt water in oceans. About 97.2% of Earth’s surface water resides in oceans.
There are five oceans in the world: Arctic, Atlantic, Indian, Pacific and Southern.
However, there is only one Global Ocean.
Danger Zone
Climate change and human activities are causing the health of oceans to decline at an alarming rate.
Pollution
Today, plastic accounts for 85% of marine litter, putting all marine life at serious risk.
Overfishing
Intensive fishing is a major threat because it depletes resources and destabilises ecosystems. However, this practice continues to be heavily subsidised by governments.
Ecosystem degradation
Each year, the oceans absorb 23% of human-caused carbon dioxide (CO2) emissions and capture 90% of the excess heat created by these emissions.
Sea Temperature Rise
Rising sea temperatures cause dramatic changes in marine ecosystems, with severe and lethal consequences for many species.