REEF, in collaboration with the University of Virgin Islands and Buck Island National Monument, took a major step last week in a novel study to better understand lionfish movement and factors that may influence that movement. The study, focusing on a 2km area of patch and continuous reef in St Croix, used innovative underwater tagging techniques pioneered by REEF to surgically implant transmitters into invasive lionfish within an array of receivers, allowing the team to pinpoint movement of the fish over the next year.