That is the underside of a humpback whale’s lower jaw as it lunges out of the water with a mouth full (minus one) herring. Getting into position for the picture is easier than getting the picture. As a guide I keep a look out for diving seagulls, which gives me the location of a herring ball. Next you try to get close to the herring ball before a humpback whale beats you to the herring ball. After that it is a matter of waiting for the gulls to lift off the water just before the whale lunges. My job is complete all the guests needs to do is have perfect timing and an excellent eye mixed with luck. My photography relies mostly on the luck.