I posted another frame of this guy back in April, taken at Barnegat Jetty. It was fun watching him dart to the safety of an upper rock the instant before a wave came in, then dart back down the slippery rock to see what new tidbits the wave brought in. He was focused on his feeding (and the waves), and oblivious to my presence. Slight crop for comp.
D7000, 700mm, ISO 1250, 1/800s @ f/7.1 manual.