8.1.4 Second video of giant squid in natural habitat.

6.2 Predators and potential cannibalism.

The first images of the animal in its natural habitat were taken in 2004 by a Japanese team. The number of different giant squid species has been debated, but recent genetic research suggests that only one species exists. Claims of specimens measuring 20 m (66 ft) or more have not been scientifically documented. The mantle of the giant squid is about 2 m (6 ft 7 in) long (more for females, less for males), and the length of the squid excluding its tentacles (but including head and arms) rarely exceeds 5 m (16 ft). It can grow to a tremendous size, offering an example of deep-sea gigantism: recent estimates put the maximum size at around 12–13 m (39–43 ft) for females and 10 m (33 ft) for males, from the posterior fins to the tip of the two long tentacles (longer than the colossal squid at an estimated 9–10 m (30–33 ft), but substantially lighter, due to the tentacles making up most of the length ). The giant squid ( Architeuthis dux) is a species of deep-ocean dwelling squid in the family Architeuthidae. Worldwide giant squid distribution based on recovered specimens

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