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that occur on the coast,
for counting sea stars,

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The Nature Conservancy has
been mobilizing volunteers

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that actually caused it to occur?

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and staff to do monitoring
at the Oregon Marine Reserves

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And number two, what are the factors

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Number one, why did it occur
across the entire West Coast?

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There's two big questions in my mind.

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The sea star wasting disease
is probably the most dramatic

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episode of this sort that we've seen ever.

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up and down the West Coast.

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We lost nearly 90% of the
organisms in some places

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and they were just falling
apart before their very eyes.

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They were showing up with
white lesions on their bodies

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that live in and amongst
these intertidal areas.

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would take over, and that would
exclude many other species

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If there are no sea stars,
basically the mussels

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of our intertidal habitats.

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which form the foundation of many

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'cause it actually preys on mussels

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The ochre star is
considered the top predator

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or even bright purple.

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typically either bright
orange or bright red,

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We see primarily one species of sea star

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on our coast called the ochre star,

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and they almost always see are sea stars.

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and go down tide pooling,
one thing they look for

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whether it has any sign
of wasting disease or not.

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- When people go to the Oregon coast

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for measuring each one.

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And we're also assessing
how healthy it is,

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(gently moving music)