Giant squid have more than just giant eyes. Proud owners of the largest eyes on earth, the colossal squid uses their big blinkers in the same way the giant squid does, to see better underwater in low or no-light conditions. This makes the colossal squid the largest invertebrate on Earth! That's a lot of calamari! But the cousins of clams and oysters, the cephalopods (octopuses, squids, cuttlefish), have complex nervous systems … For many species of squid, the parents die soon after reproducing due to the very short life span of these creatures. From the moment that a squid is born, the fight to survive is on. A study published in March 2012 suggested that giant squids could detect a moving sperm whale from 394 feet (120 meters) with those big eyes. There are some larger estimates of 40 centimetres or so, but the duo think that these are overblown. They’re at least 25 centimetres (10 inches) across, making them the largest eyes on the planet. The colossal squid is a massive squid that lives in the deep sea surrounding Antarctica, and it is the holder of multiple records. The size of a colossal squid ranges from 12 to 14 meters (39 to 46 feet) long, weighing up to 750 kilograms (1,650 pounds). They also got access to a colossal squid – the largest one ever caught – which had been frozen in New Zealand’s Te Papa Museum. The ink is a dark liquid and is expelled through the funnel. The Colossal Squid = back then the holder for the title of having the largest eyes but now the colossal squid snatches the title .The eye is 27 cm (10.63 in) wide, with a lens 12 cm across. They have huge eyes which can be 25 centimetres or more in diameter (as big as a soccer ball). Colossal squid have eyes the size of soccer balls, and can weigh up to 700kg. Researchers hooked this adult male colossal squid in the Ross Sea near Antarctica in 2007. No one has ever seen a colossal squid producing ink so we can't be sure what the ink looks like or how the squid … Not only is it the largest invertebrate on Earth, it also has the largest eyes of any animal, larger even than those of the great whales. The gigantic sea creature is about 33 feet long and weighed in at just under 1,000 pounds. The giant squid sees the world with eyes the size of soccer balls. Their body is more rounded, and a great deal stouter, making the colossal squid considerably heavier than the giant squid. Its eye was the same size – 27 to 28 centimetres. All squid have a sac of ink inside the mantle. If the squid meets a predator, it shoots out a cloud of ink, which hides the squid so it can escape. However, at the same time they are struggling to keep predators at bay. That makes them the biggest animal eyes … Squid Brains, Eyes, and Color Invertebrates, which are animals without backbones, are often considered simple and dumb, with no brains at all. 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