WEBVTT

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What is bioluminescence?  Bioluminescence
is a chemical process that allows living

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things to produce light.  On land,
fireflies are one of the most visible

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users of bioluminescence.  In the ocean,
bioluminescent creatures can be found

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from the surface all the way down to the
deep sea floor, and the vast majority of

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ocean animals, from bacteria to sharks,
include some members who make light.

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Possibly as much as 90% of creatures in
the deep ocean produce light.  We don't

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know all the uses of bioluminescence but
some animals use it to warn or evade

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predators, to lure or detect prey, or to
communicate with each other.  So what else

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is it used for and how did this
superpower evolve?  Those are questions on

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which we still need to shed some light.

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