While whaling is no longer considered as large a threat for fin whales these days (the species is still hunted in Iceland and Greenland, although with strict quotas managed by the International Whaling Commission), they're still vulnerable to other factors like vessel strikes, entanglement in fishing gear, noise pollution, and climate change. Fin whales require a large amount of small prey species to survive, which they strain from the water through baleen plates. A single whale can eat over 4,400 pounds of krill each day. For this reason, a threat to fin whale prey due to environmental changes and overfishing is also an indirect threat to fin whales themselves.