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Colossal Squid Has World's Biggest Eyes

Ray Lilley in Wellington, New Zealand
Associated Press
April 30, 2008
 
Marine scientists studying the carcass of a rare colossal squid said Wednesday they had measured its eye at about 11 inches (28 centimeters) across—bigger than a dinner plate—making it the largest animal eye on Earth.

Watch video of the squid's "eye exam.")

One of the squid's two eyes, with a lens as big as an orange, was found intact as the scientists examined the creature while it was slowly defrosted at New Zealand's national museum, Te Papa Tongarewa.

(Read: "Colossal Squid Thawing; Hints at Even Bigger Beasts" [April 29, 2008].)

The squid has been preserved there since being caught in the Ross Sea off Antarctica's northern coast last year. (See a photo of the squid's capture).

"This is the only intact eye [of a colossal squid] that's ever been found. It's spectacular," said Auckland University of Technology squid specialist Kat Bolstad, one of a team of international scientists brought in to examine the creature.

"It's the largest known eye in the animal kingdom," Bolstad told The Associated Press.

Largest Squid Ever Recorded

The squid is the biggest specimen ever caught of the rare and mysterious deep-water species Mesonychoteuthis hamiltoni.

When caught, it measured 26 feet (8 meters) long and weighed about 1,000 pounds (450 kilograms), but scientists believe the species may grow as long as 46 feet (14 meters).

"This is the largest eye ever recorded in history and studied," said Eric Warrant of Sweden's University of Lund, who specializes in vision in invertebrates.

"It has a huge lens the size of an orange and captures an awful lot of light in the dark depths in which it hunts."

The squids can descend to 6,500 feet (1,980 meters) and are known to be aggressive hunters.

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