How 3-D Mapping Software Could Help Save Coral Reefs

Marine scientists are finally graduating from tape measures into the world of 3-D modeling.

Covering just .1% of the ocean floor and supporting an astonishing 25% of all marine life, coral reefs are crucial to maintaining Earth's biodiversity. Climate change and pollution threaten many coral reefs, but scientists aren't always sure exactly how—and to what extent. Blame antiquated modeling techniques. "We're going in and using a tape measure or a piece of chain to measure," says Sly Lee, a marine scientist who founded the science communication nonprofit the Hydrous, along with Luke Walker and Yasmeen Smalley. "We are talking about sending people to Mars, but [for this] we're still using a tape measure?"

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