Final answer:
The colossal squid has the largest eyes in the animal kingdom, measuring up to 11 inches in diameter. These large eyes help the squid see in low-light environments and hunt for prey in the deep sea.
Step-by-step explanation:
The massive squid (Mesonychoteuthis hamiltoni) is the animal with the biggest eyes in the animal kingdom. The enormous eyes of giant squids can reach a diameter of up to 10 to 11 inches (25 to 28 centimetres). The giant squid lives in the deep ocean, at depths of up to 6,500 feet (2,000 metres), and these large eyes help it detect bioluminescent light and catch prey.
The huge size of the eyes provides improved light-gathering ability, which is a clear advantage in the deep sea's low light levels. The enormous squid is an elusive and enigmatic creature of the deep sea, and one reason it survives in the darkness of the ocean is because of its amazing eyes.