What would happen if the Earth was only water?

If the entire world were covered with water, then the only source of freshwater would be rain and other forms of precipitation (e.g., snow, hail, etc.). If the world were covered with water, many of the ecosystems near land would also probably suffer, such as coral reefs, kelp forests, mangroves, and salt marshes.

Was the world once covered in water?

Bottom line: New evidence from Harvard suggests that – a few billion years ago – Earth was a true water world, completely covered by a global ocean, with little if any visible land.

What if there is more land than water on Earth?

If the oceans covered less area, then the oxygen would not be replenished as fast as it was being used by land organisms. Ultimately, the amount of oxygen would decrease, while the amount of carbon dioxide would increase. A lot more air and land pollution would be observed.

What would the Earth be like without water?

With no water supply, all vegetation would soon die out and the world would resemble a brownish dot, rather than a green and blue one. Clouds would cease to formulate and precipitation would stop as a necessary consequence, meaning that the weather would be dictated almost entirely by wind patterns.

What if the world was inverted?

An inverted Earth would be barely covered with water. The Himalayan Trench would turn out deep, but the rest of the seabed wouldn’t. Less water surface would mean less evaporation and precipitation. As a result – most of the land would become a scorching desert, too hot and waterless for humans to survive.

What would happen if there was less ocean?

Without clouds forming over the ocean, rain would be incredibly rare, and the planet would become desert. We’d watch our lakes and water supplies dwindle a little more every year until nothing was left. Humans might survive for a while near our homes.