I've always been under the impression that the big scallops that sell for cheap in the grocery stores are actually skate.I know that alot of times when you order clamstrips you are actually getting the muscles from sea cucumbers!
Sharks don't urinate like we are used to, but secrete out of there skin.That is where the soakings you hear about come from.I do not know if skate's have that same function or not.I used to catch them off the first street dock there in b-town pushing 5' wing spans.You will play like hell trying to get one in when that big.