How Big Is the Giant Squid? A Detailed Look at Its Body Length, Weight and Deep-Sea Habits

The giant squid is one of the largest invertebrates in the world and belongs to the large squid group within the class Cephalopoda. Because it lives year-round in the deep sea and is secretive in its movements, for a very long time it appeared only in sailors' legends and in occasional stranding records. Its appearance is similar to that of common squid, but every part is magnified many times over, making it a giant creature of great mystery in the ocean.

Based on existing stranding and observation records, the total length of the giant squid, including arms and body, usually reaches more than ten meters, and a few large individuals are said to approach twenty meters, with its two long, slender tentacles accounting for a considerable proportion of the whole body. Its weight generally can reach several hundred kilograms. Its eyes are also astonishingly large, with a diameter that can exceed twenty centimeters, and are considered among the largest eyes in the animal kingdom, helping it capture faint light in the dim deep sea.

The giant squid is widely distributed in the deep waters of the world's major oceans, usually active near the seafloor at several hundred meters or even deeper, and it rarely rises to the surface. It is a fierce carnivorous animal that feeds on fish and other cephalopods, while also facing threats from large predators such as the sperm whale. People's understanding of its habits comes largely from stranded individuals and the remains left in the stomachs of its natural enemies.

Many people wonder whether the giant squid can be eaten. In theory it is edible just like other cephalopods, but because it lives at great depths and is extremely difficult to catch, it is almost never seen on the market, let alone forming a large-scale fishery. For this very reason, the giant squid remains a popular subject of deep-sea biological research, and every time it is photographed or washes up on a beach, it attracts widespread attention.