The hunters become the hunted as Greenpeace activists took to the water to protest against fin whaling in the port of Hamburg on Friday.
The ship arriving from Iceland, which opposes the international ban on commercial whaling, was picketed by environmentalists upset that German authorities allowed it to dock.
Fin whales are the second largest mammal on earth, and are listed as a threatened species. Icelandic whalers have killed up to 25 whales since their hunting season began in June following a three year hiatus. The meat is often exported to Japan where it can end up being used in dog food.
Earlier this year, the Port of Rotterdam Authority stopped the transport of whale meat through their terminal. Greenpeace wants other European ports to follow suit.