The colossal squid (Mesonychoteuthis hamiltoni) primarily inhabits the cold, deep waters of the Southern Ocean, particularly around the Antarctic continent. They are known to dwell at depths ranging from 1,000 to 2,000 meters, though they have been found as deep as 2,500 meters. These habitats are characterized by extreme cold temperatures and high pressures, making them suitable for the colossal squid's unique physiology.
