 The tawny nurse shark is taken by commercial fisheries operating throughout its range , including off Pakistan , India , Thailand , and the Philippines ; an exception is in Australian waters , where it is only taken in small numbers as <unk> . This shark is caught using <unk> trawls , floating and fixed bottom gill nets , and on hook @-@ and @-@ line . The meat is sold fresh or dried and salted , the fins are used for shark fin soup , and the <unk> processed into <unk> . In addition , the liver is a source of oil and <unk> , and the thick , tough skin is made into leather products . Off Queensland , Australia , the tawny nurse shark is valued by big @-@ game anglers . When hooked , large individuals are <unk> opponents and are difficult to subdue due to their habit of spinning . They are also capable of spitting a powerful jet of water into the faces of their captors , making <unk> noises in between jets ( making the tawny shark one of the few species of sharks to produce a noise ) ; whether this is a deliberate defensive behavior is uncertain . 
