Japanese angelshark is eaten and the rough skin is made into a type of leather called shagreen for use in wood finishing. Angel sharks in general are highly threatened by commercial trawl fisheries due to their susceptibility to capture and low rate of reproduction, and angel shark species elsewhere are known to have declined markedly under fishing pressure. Trawling activity in the Yellow Sea and other parts of the northwestern Pacific is intense and, coupled with pollution, has had a serious impact on the local ecosystem. The Japanese angelshark population is suspected to have declined by up to 50% or more under
Leather through in the event of an accident.) Leather produces some environmental impact, most notably due to: One estimate of the carbon footprint of leather goods is 0.51 kg of CO equivalent per £1 of output at 2010 retail prices, or 0.71 kg COeq per £1 of output at 2010 industry prices. One ton of hide or skin generally produces 20 to 80 m of waste water, including chromium levels of 100–400 mg/l, sulfide levels of 200–800 mg/l, high levels of fat and other solid wastes, and notable pathogen contamination. Producers often add pesticides to protect hides during transport. With solid