The lenses from the eyes of a colossal squid (Mesonychoteuthis hamiltoni). The colossal squid is the largest known invertebrate, which their eyes being appropriately large at up to 27 centimeters across. As the largest eyes in the animal kingdom, their purpose is most likely aid in spotting sperm whales, which pose as their only predators. According to Dan-Eric Nilsson of Lund University in Sweden, the size of the squids pupil could indicate that the squid can detect approaching whales from over 120 meters away, thus giving it plenty of time to take evasive action. (via)