Looking from tail towards the head as a humpback whale looks like it is "being chased" by a common dolphin. Tricks of the photograph's angle.
Five humpback whales are captured surface lunge feeding in a cooperative group. Bown pelicans, sooty shearwaters and Heermann's gulls are also abundant.
Megaptera novaeangliae surface lunge feeding groups 2015 06-25 SB Channel-047