The blue whale is a massive animal with a huge appetite of meat. Blue whales eat almost 40 million krill every day. Baby blue whales diet only consists of milk for 6 to 18 months. Fish, crustaceans, and squid that are swimming in or near the school of krill may be swallowed with the krill. Blue whales only go to the surface at night to feed on krill that are glowing. The blue whale's use their baleen to keep the krill in place while they push water out of their mouth.Krill are bioluminescent which makes it easier for the blue whales to hunt at night. In conclusion the blue whale is a massive animal with a huge appetite of meat.