Pound net fisheries are primarily a problem in waters off of Virginia and North Carolina, however generally turtles are released alive. Due to expansion of this fishery, it may have a large impact on turtle recovery. Loggerhead turtles are vulnerable to entanglement in trap fishery lines, and subsequent drowning. The impact on the population has not been determined. In areas where recreational boating and ship traffic is intense propeller and collision injuries are not uncommon.
Sea turtles are at risk when encountering an oil spill.
Respiration, skin, blood chemistry and salt gland functions are affected. Pesticides, heavy metals and PCB's have been detected in turtles and eggs, but the effect on them is unknown. Marina and dock development can cause foraging habitat to be destroyed or damaged. Turtles have been caught in saltwater intake systems of coastal power plants. Underwater explosions can kill or injure turtles, and may destroy or damage habitat.