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
Terror-Creatures from the Grave Several home video releases of the film have many different versions of the film. The DVD from Something Weird Video has a running time of 77 minutes and 30 seconds, and includes a nude scene with Mirella Maravidi. This scene is not included in Sinister Cinema's video release, which is four minutes longer due to an extra dialogue scene. Severin Films has announced a planned Blu-ray disc release of the film. In a contemporary review, the "Monthly Film Bulletin" was disappointed that the "creatures" of the film's title are "confined to the occasional intrusion of a plague-ridden hand or arm",