https://amcham.ma/wp-content/uploads/2014/pdf/annex4-us-schedule.pdf
and whalebone hair, horns, antlers, hooves, nails, claws and beaks, unworked or simply prepared; waste and powder free l coral, shells, cuttlebone and similar materials, unworked or simply prepared, but not cut to shape; powder and waste thereof free l natural sponges of animal origin % a ambergris, castoreum...