Approximately what percentage of the Earth's surface is covered by water?

About 75% of the Earth's surface is covered by water, primarily in the form of oceans. This substantial coverage has a significant impact on the planet's climate, weather patterns, and overall ecosystem functioning. The oceans play critical roles, such as regulating temperature, supporting marine life, and influencing atmospheric conditions. Understanding the percentage of the Earth's surface that is aquatic is crucial for studies related to biology, environmental science, and the impacts of climate change, as this vast water body is integral to life on Earth.