So far, people's understanding of giant squid is mainly limited to anatomical understanding. To sum up, it mainly includes the following contents:
How long can it grow? According to the Guinness Book of World Records, the largest squid ever discovered was 18.3 meters long (including tentacles) and weighed 1 ton, and its body was found on the shore. Scientists have found that the size of the giant squid's beak has a certain relationship with its body size, so it is speculated that the average adult giant squid can grow to 6 ~12 meters and weigh 50 ~ 300 kilograms.
Life cycle: Most cephalopods have a short life cycle, usually they grow up and mature in 2-3 years and die soon. For squid, people can estimate their age according to a set of bones in their brain. There is a tissue called "calcium-containing body" in this group of bones called "balancer" Usually the balancer appears in the head of invertebrates, and the calcium-containing body exists in the vesicle in the balancer. Like tree rings. Calcium can form a sun ring, that is, it grows one layer every day. By counting these sun rings under a high-power microscope, scientists can know their ages. It turns out that the longest life cycle of the known giant bird thief is about 5 years.
Food: 1977, several scientists carefully analyzed the contents of the stomachs of three giant squid. In these pastes, they found bivalves, crustaceans, bamboo pod fish in the middle waters, and even found the remains of octopus and small squid.
Foraging: There were two kinds of speculations before. Some experts believe that the giant squid floats on the bottom of the water with its head hanging down by the natural buoyancy of its body, waiting for the unsuspecting fish to pass under its head, and picking up the fish one by one with its long tentacles and sending them into its mouth. But there is an unexplained problem in this way of eating-the things caught can't meet the basic nutritional requirements of giant squid. How can they survive? Another theory holds that they are active predators and often lie in wait for an opportunity to attack. This means that they must combine stealth and quick attack seamlessly to catch a lot of food. From the anatomical point of view, the giant squid's big eyes, numerous toothed suckers, strong swallowing power and strong internal capsule all show that only this way is reasonable.