Another method of feeding we often see with whales feeding alone is "Lunge Feeding". The whale will lunge through a shoal of prey with mouth gaping open often exploding at the surface with both food and water.
Humpback whales do not feed in the warmer climates of Hawaii and Mexico so it certainly makes sense that once they arrive in their feeding grounds, this will occupy most of their time. They will feed on krill and various kinds of small, shoaling fish such as herring and mackerel. They may eat up to 1,400 kg of food a day.
While humpback whales feed, especially when it is a group effort, there will be an array of different calls from short grunts to long hollow calls.
Feeding Calls