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Goddard TV Video Tape: G2000-097

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Located in tropical latitudes, the hard structures we know as coral are really the incremental build-ups of calcium carbonate deposited from the skeletal remains of these tiny colonial animals. Landsat 7 Looks at Pseudo Atolls
Near infrared data makes some areas on the reef jump out in bright red relief. The near infrared band best gathers the electromagnetic signature of a thriving ecosystem. Landsat 7 Looks at Barriers
But over time, while the surrounding ocean wears away the main body of the island, the coral ring remains. Landsat 7 Looks at Banks
Detailed images of reefs from nearly 900 locations around the world have been collected in the first year of the Landsat 7 mission. Landsat 7 Looks at Coral Reefs: (2 of 2)
These elegant whorls of color are atolls, enclosed coral reefs almost always surrounding a lagoon. Generally speaking, atolls are the products of volcanic islands that have eroded away. Landsat 7 Looks at Coral Reefs: (1 of 2)
With the Landsat 7 data we can rigorously test hypotheses about how entire reef ecosystems form,— says coral reef ecologist Bruce Hatcher of Dalhousie University—We no longer are limited to the observations we can collect by wandering around in small boats and sampling individual reefs to infer large-scale processes from a few samples. Coral Reef Flyover of the Florida Keys
Highway U.S. 1 in Florida, built on Coral Reefs. Here is a MPEG of the Animation. US1 Flyover of the Florida Keys