Two types of surveys were conducted. The large-scale survey aimed to collect data on the presence and distribution of marine mammals, as well as sea turtles and seabirds, up to 40 km around the drill site. During the small-scale survey, scientists visually monitored for marine mammals and sea turtles up to 4 km around the drill site during drilling operations.
Scientists also utilized a passive acoustic monitoring system to acoustically monitor for marine mammals in real-time. Surveys were conducted monthly with the final survey completed in March 2019.