Image 3 of 3 in a row: a humpback whale feeds on a northern anchovy school through a vertical lunge. The gullar pouch and ventral blubber grooves are fully-extended with water and fish. Water is starting to pout out of the mouth through the baleen filter.
Image 1 of 2: a flock of black-vented shearwaters sitting on the ocean surface in a "hot spot" start to panic and take flight as a feeding humpback whale rises to the surface upside down. The ventral groove blubber is seen just under the surface.