Popular with the interns and part of Indo Ocean Project’s ongoing research with Florida International University is our regular BRUV drops. BRUV stands for Baited Remote Underwater Video and consists of a GoPro mounted onto a frame and deployed at depth across our local reefs. It is a relatively simple and non-invasive technique to gather footage that is then used to determine the number of elasmobranchs or commercially viable fish species present in the area.
1 kilogram of bait is put into a wire cage and attached to a pole in the camera’s field of view. BRUV sampling is done throughout the Marine Protect Area (MPA) that surrounds Nusa Penida. Locations for deployment are scientifically chosen at random to avoid site bias and placed during daylight hours. We drop them between 4m and 30m of depth, with a flat bottom to maximize line of sight. Special care is taken using SCUBA gear and lift bags to avoid live coral and to orient the BRUV facing down current. The BRUV is left for an hour while other activities such as survey or training dives, are conducted.
Before and after each deployment environmental variables are measured including water current speed, salinity, bottom depth, visibility, and water temperature. To record the data each video is viewed twice by trained volunteers so that every elasmobranch or commercially valuable fish species present in the field of view is counted.
If you happen to see our BRUV whilst diving in Nusa Penida PLEASE DO NOT TOUCH IT, if possible try to swim past and BEHIND so that you do not come into view of the GoPro, thank you!
Locations: Penida, Komodo, Bunaken, Bira