Purse seiners deploy large amounts of drifting fish aggregation devices (FADs) in all tropical oceans to catch tunas. These FADs are constructed with porous synthetic fibre netting. which are responsible for incidental mortality of sea turtles and sharks through entanglement. and can engage in ghost fishing if they are lost and abandoned. https://www.roneverhart.com/Doorking-2108-080-eVolve-Smart-Video-Intercom-System/