A giant squid’s body may look pretty simple: Like other squids and octopuses, it has two eyes, a beak, eight arms, two feeding tentacles, and a funnel (also called a siphon). But, of course, all of it is much larger!
Giant squid can snatch prey up to 33 feet (10 meters) away by shooting out their two feeding tentacles, which are tipped with hundreds of powerful sharp-toothed suckers. These feeding tentacles are very long, often doubling the total length of the giant squid on their own.
ARMS AND BEAK
Eight thick arms speckled with 2-inch wide toothed suckers guide prey from the feeding tentacles to a sharp beak in the center of the arms, where the prey is sliced into bite-sized pieces. These bites are further cut and ground by the radula, a tongue-like organ covered with rows of teeth, that is inside the squid's beak.
The head holds eyes the size of dinner plates -- the largest in the animal kingdom. At 1 foot (30 centimeters) in diameter, these huge eyes absorb more light than their smaller counterparts would, allowing the squid to glimpse bioluminescent prey -- or sight predators lurking -- in the dark. The squid's complex brain, which is tiny compared to its body, is shaped like a donut. Strangely enough, its esophagus runs through the "donut hole" in the middle, which makes grinding up food into tiny bits an evolutionary priority.
BODY AND FUNNEL
The main part of the body, or mantle, contains all the basic organs. And on the body’s underside is the funnel—an amazing multipurpose tool. By pumping water and other fluids through the funnel, the squid uses it to exhale, expel waste, lay eggs, squirt ink, and move through the water by jet-propulsion.