Yes, longlines can have an impact on seafloor habitats, but the extent varies based on how they're utilized: Pelagic Longlines: These are set to float in mid-water, targeting species that live away from the seabed. Pelagic longlines generally have minimal direct impact on the seafloor since they don't touch it. Bottom Longlines: These are weighted to lie on or just above the seafloor, targeting bottom-dwelling species. This type can have more direct interaction with the seabed. While they're less disruptive than methods like bottom trawling, which drags heavy nets across the ocean floor, bottom longlines can still: Cause physical disturbances or damage to sensitive habitats. Potentially alter the distribution of bottom-dwelling species. Lead to "ghost fishing" if lines are lost, where the gear continues to catch marine life.