Its name suggests it's enormous is about the size of Italy.

Scientists can only monitor the health of a small fraction on it.

Wow, there are some things that we really need such a simple reconnaissance information that you can get from a handful of photographs from a reef taken underwater.

That's well within the capability of anybody with a camera.

And so we're trying to mobilize three enthusiasts there to get out to a large number of reefs.

I take a series of photographs that can be analyzed both by then by experts, but also from people around the world who want to get involved from their armchair.

This is, of course, one of the great wonders of nature.

All of these corals will spawn simultaneously.

We know that some reefs are much more important than others at driving recovery.

The most important reefs will be those that are still in pretty good shape now, so they have lots of adults, so they could use lots of eggs.

But they're also in the position so that they send those new corals to places in need.