We had one sitting there a few feet away when we were spinning for mackerel by the old Lifeboat slip in Tenby a few years back. We chucked it a few fresh mackerel which it ate, then chucked it a frozen one we had as bait and had defrosted. It put it to its mouth then flipped it over its shoulder and just sat there staring at us like it was saying "Nice fecking try but you ain't palming me off with that shit!"
clever dam things for sure. This one positioned its self perfectly to intercept any fish I tried to bring in and when I did launch bit of lead its way it just dived and popped