What if all the oceans disappeared from the Earth’s surface?
What would a world with no high seas look like?
What would happen to all the creatures that live under water?
Could humanity survive on the planet
if there were no oceans left?
This is What If
and here’s what would happen
if all the Earth’s oceans evaporated.
In the early years of our planet, the earth was flat,
but not in a way you might think.
The earth just didn’t have any mountains
and was mostly covered with water.
Then about a billion years ago,
land emerged from under the sea
and changed the planet’s atmosphere.
This led to the debut of the first life-forms here on earth.
Eventually, the planet will heat up
and all the oceans will vanish.
This isn’t scheduled to happen for another billion years.
But how bad would it be
if all the oceans evaporated right now?
Today, oceans cover about 70% of the Earth’s surface.
If you put all that water into Olympic sized swimming pools,
you’d need over 500 trillion of them.
With all the oceans gone,
we’d still have some water available.
Oceans account for 97% of all the water on the planet.
The remaining 3% is held in rivers,
湖泊 地下水 甚至冰川中
lakes, underground water, even the ice caps.
But that wouldn’t be enough to make up for the loss of the oceans.
The world’s oceans act as a global climate control system.
They absorb most of the sun’s heat
and distribute it evenly around the planet
so that no one area gets too hot or too cold.
They also sustain the water cycle,
evaporating into clouds and then raining back to earth.
But you won’t need to keep your umbrella at hand,
expecting a big storm once all the oceans evaporated.
In our scenario,
the earth wouldn’t be able to keep all that vapour in the atmosphere.
Oceans would leave our planet for good,
turning it into a vast scorching desert.
Sea creatures would be the obvious
first casualties in these conditions.
Then with no oceans to absorb the heat from the Sun,
the earth would slowly roast until it turned into Venus.
How long would we have until our planet became uninhabitable?
Well, whatever water was left
would evaporate in a matter of days,
leaving humanity to die from dehydration.
Most animals would go extinct without water.
Maybe camels would become Earth’s next civilization.
After a few days,
plants would give up their attempts to survive without water.
After a few weeks,
the same would happen to our forests.
Eventually, they’d catch fire and would keep burning
until there was no vegetation left.
In about a year’s time,
the earth would turn into a burnt and lifeless Rock.
And without water,
it probably wouldn’t get the chance to produce life ever again.
Maybe one day,
another life-form might visit our solar system
and wonder what happened to our once glorious planet.
But that’s a story for another What If.