The ‚bubble-netting‘ of the humpback whales is a fascinating hunting technique and is passed on over generations. Every year the animals travel 5000 km to Southern Alaska to stay for the summer time at the traditional feeding grounds. The water of the cool and rough Northern Pacific is eutrophic and offers a high abundance of herring fish. The whales hunt in groups and each individual has a specific job. Some of the animals blow bubbles while others make loud, high-frequency noises. The herrings get irritated and will cluster together but will not cross the bubble-net. This is the chance for the humpback whales to chase the fish up to the water surface and swallow as much as possible.