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
Creatures of the Night completely absent from "Creatures of the Night", making it the heaviest album the group had made at that point. "I Still Love You", the only ballad on "Creatures of the Night", was still heavier and darker than any ballad Kiss had released in earlier years. Also contributing to the heavy sound was Carr's drumming style, which was similar to John Bonham's drumming than to Criss' jazz-influenced style. Some of the earliest pressings of the album mistakenly contained one full side of John Cougar's "American Fool". Both Kiss and Cougar were under the umbrella of Mercury Records at the time. "Creatures