We wish to thank the captains and crews of the vessels that were instrumental in collecting these data. This includes the R/V Suncoaster, R/V Bellows, M/V Spree, and the NOAA vessel Gordon Gunter. This work would not have been accomplished without the technical expertise of Charles Worley and Dann Blackwood of the U.S. Geological Survey and Brian Donahue of the University of South Florida. This Open-File report greatly benefited from the reviews by Page Valentine and Julia Knisel. Funding for this research was provided by the U.S. Geological Survey Coastal and Marine Geology Program.