WEBVTT

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Earth is a liquid planet.

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70 percent of its surface is covered by water
yet much is still unknown about the depths

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of the oceans.

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They call it inner space - an inhospitable
environment difficult to explore and unfit

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for human habitation.

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Nevertheless, scientists have figured out
ways to work and live on the ocean floor.

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Aquarius is the only operating undersea station
in the world today.

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There are very few people that get to do this
kind of work.

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This is like getting into a submarine, except
we can swim out any time we want.

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The Aquarius Reef Base gives researchers around
the clock access to a coral reef ecosystem.

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Over the last several decades, coral reefs
around the world have drastically declined

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in health.

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Now scientists fear that a change in the chemistry
of the water could add further insult to injury.

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Ocean acidification occurs when CO2 dissolves
into seawater and it reacts with the water

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to make an acid.

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Aquanauts living at Aquarius are the first
to study this process 24/7 - using new high

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tech instruments.

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What impact might ocean acidification have
on the reef?

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What else might the scientists findings
tell us?