Anchored artificial floating objects are commonly used as FADs (Greenblatt 1979; Matsumoto et al. 1981; Kihara 1981) and are placed either on the surface or submerged in the water column (Ministry of Fisheries and Marine Resources 2008).
Anchored artificial floating objects are commonly usedas FADs (Greenblatt 1979; Matsumoto et al. 1981;Kihara 1981) and are placed either on the surface orsubmerged in the water column (Ministry of Fisheriesand Marine Resources 2008).