Our pet kingdom is full of various eyes. The human eye weighs much less than an ounce. That’s about as hefty as 11 pennies. Yet I mean the answer come your question really depends on i m sorry eyeballs you room curious about. Probably you are searching for an answer around the biggest pet eyes on ours planet.

You are watching: How much does an eyeball weigh

An elephant’s eye is about the size of a golf ball, but there are also bigger eyes. A gray whale’s eye are about the size of a baseball. However they still no the best eyes. Those belong to the gigantic squid.

I made decision to asking my friend Kirt Onthank exactly how much giant squid eyes weigh. He studied cephalopods, which incorporate squid, together a college student at Washington State University and now teaches biology in ~ Walla Walla University.

“I don’t know the exact answer,” Onthank said. “But us can acquire a really good estimation.”

He claimed the largest gigantic squid was in reality measured native a photograph. No one in reality weighed it. However we do recognize its eye had a diameter that 10.5 inches, i m sorry is simply a little bigger 보다 a basketball.

While person eyes are consisted of of a more jelly-like material, a squid’s eyes space pretty much all seawater. Learning this, we have the right to estimate that is weight.

After a little math, that comes the end to about 22.7 pounds—more 보다 3,000 pennies.

“That is one really large eye,” Onthank said.

The world’s biggest eyeballs

Colossal squid have also bigger eye that sweet in at around 25.3 pounds. Even though their eyes are much bigger 보다 yours, castle still have some the the same parts.

Both squid and also people have actually lenses, irises, pupils to let light in, and also retinas to capture the light and assist send a message to her brain. One thing squids don’t have is eyelids.

Exactly why colossal squid need the world’s greatest eyeballs is a question some researchers are tho investigating. The finest theory is the their eyes space geared to view sperm whales, Onthank said.

Sperm whales have eyes the are only 7 centimeters in diameter. They space super tiny compared to their 40-foot-long bodies. They count on sound waves the bounce off points to figure out wherein they are and also to discover food. And their favorite food is squid.

A squid’s large eye help it detect an extremely dim irradiate deep in the ocean. It transforms out, over there are likewise some bioluminescent creatures in the deep waters. Bioluminescent creatures do their very own light with a chemistry reaction that enables them come glow in complete darkness. If there was a sperm whale around, it would certainly disturb several of these creatures who provide off light.

See more: How Fast Can You Travel By Horse Travel In A Day? How Far A Horse Can Travel In A Day Archives

The squid can use its large eyes to take in the light and receive a signal that could just assist it avoid ending up being a sperm whale’s lunch.

Sincerely,Dr. Universe

ABOUT ASK DR. UNIVERSEDo you want to reprint this Q&A? Just send a message to Dr.Universe