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
Ostrich leather and style are vague and often simply a subjective opinion of the tanner or buyer. A defect can be such things as a hole, scratch, loose scab, a healed wound or bacterial damage. The World Ostrich Association has a document with full definitions of defects for each grade. The World Ostrich Association also have a document entitled "Factors Influencing Skin Quality" that can be accessed from the Association's industry standards menu. Traditionally, fashion has driven the demand for ostrich leather. Fashion houses successfully used ostrich leather in handbags for many years. Most designer brands have at least one purse made