Samples of coral from different locations can be used to analyze genetic relatedness and origin. 

Samples of coral from different locations can be used to analyze genetic relatedness and origin.  Image courtesy of E. Hannerman, Deepwater Canyons 2012 Expedition, NOAA-OER/BOEM.

Related Links

Deepwater Canyons 2012: August 21 Log

Deepwater Canyons 2012: Pathways to the Abyss

NOAA Ocean Explorer Gallery