Fishermen in Hawaii and other parts of the world have long known that tunas and other pelagic fishes are attracted to floating objects. Fishermen have benefited from this behavior by fishing around floating logs, nets, debris and other flotsam.
The State of Hawaii has capitalized on this phenomenon by placing Fish
Aggregating Devices (FADs) in the waters surrounding the Hawaiian Islands. In
these waters, schools of tunas and other important pelagic fishes such as
dolphin fish (Mahimahi), wahoo (Ono), and billfishes can be induced to
congregate and remain for periods of time in an area so that fishers can easily
locate them. Thus, the FADs are used to "attract" and "hold"
pelagic fishes in areas to enhance fishing.
In 1977, the Honolulu Laboratory (Southwest Fisheries Center) of the
National Marine Fisheries Service, with funds from the now defunct Pacific
Fisheries Development Foundation, installed a few experimental anchored rafts
off Oahu, Lanai and West Hawaii. Skipjack tuna (Aku) catches of 5 to 15 tons
were frequently reported by pole-and-line aku fishing vessels around these
rafts. The Aku fishing vessels also used less then the usual amount of live
bait enabling them to make more fishing trips per week. Sport fishers also
reported catches averaging 300-700 pounds of skipjack tuna and 200 pounds of
mahimahi per boat per weekend.
Encouraged by the successful results in Hawaiian waters, the Department of
Land & Natural Resources, Division of Aquatic Resources, proposed
establishing a system of Fish Aggregating Devices (FADs) in 1979 to revitalize
the fishing industry and increase sportfishing opportunities. The State
Legislature appropriated funds for the Department to develop and establish the
FAD system. Today, principal funding is derived from the Federal Aid in Sport
Fish Restoration Program.
In 1980, the Division of Aquatic Resources designed, constructed and
deployed twenty-six (26) FADs in waters around the main Hawaiian Islands. The
FADs were located 2.4 to 25 miles offshore and in depths of 80 to 1,510 fathoms
as recommended by Hawaii´s fishermen through statewide public meetings.
In 1996, the State FAD program came under the operation of Hawaii Institute
of Marine Biology (HIMB), SOEST, University of Hawaii in cooperation with the
State of Hawaii´s Division of Aquatic Resources. Currently, there are 55
surface FADs monitored and maintained statewide. Over the last 16 years FAD
designs and deployment has been greatly improved to increase the life and
effectiveness of the system.
Several
major research programs utilize Hawaii's FADs. The results of
these experiments are used worldwide to improve resource management and develop
sustainable fishing practices.