Gary Greene is a marine geologist who has been mapping the sea floor of the Salish Sea for three decades. He served as Director — and is currently Professor Emeritus — of the Moss Landing Marine Labs on Monterey Bay in California and was a research faculty member at Friday Harbor Labs. Now heading the Tombolo Mapping Lab on Orcas Island, he has pioneered sophisticated sonar techniques to map the sea floor in many regions of the Pacific Ocean, discovering previously unknown benthic habitats and geological features such as submarine faults and folding.