More than just colourful underwater scenery, coral reefs have huge benefits for life on land. From developing treatments for cancer to protecting shorelines from tsunamis, these diverse ecosystems matter much more than we think.

We explored the wonders of coral reefs in our exhibition Coral Reefs: Secret Cities of the Sea (27 March - 13 September 2015). You can still see some of our coral reefs content here: http://bit.ly/NHM-CoralReefs-Exhibition

00:00 Intro
0:13 How long ago did corals exist?
0:30 How diverse are coral reefs?
0:54 How do coral reefs help us?

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