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
Shagreen of its introduction from China perhaps during the 16th century rule of Suleiman the Magnificent. Three items made of shagreen can be found in the Topkapi collection. Since the 18th century Shagreen has typically been used for covering portable items such as luggage, toilet cases and other boxes, the hard and robust looking finish seeming to assure its reputation for standing up to rough handling; book coverings are also known as well as larger pieces of furniture. The water resistant qualities ascribed to the finish are probably why there are many toiletry cases and associated objects such as shaving kits,