Scientists made a breakthrough discovery while comparing the eyes of 17 sharks

In this Jan. 7, 2012 photo provided by the U.S. Fish and Wildlife Service, a shark swims off the coast of Midway Atoll in the Northwestern Hawaiian Islands. The Battle of Midway was a major turning point in World War II's Pacific theater. But the remote atoll where thousands died is now a delicate sanctuary for marine life, and a new battle is pitting preservation of its vaunted military history against the protection of its wildlife. Midway, now home to the largest colony of Laysan albatrosses on Earth, is on the northern edge of the recently expanded Papahanaumokuakea Marine National Monument, now the world's biggest oceanic preserve. (Wyland/NOAA via AP)

[anvplayer video=”4130010″]

Videos by Rare

We think National Geographic said it best:

“Sharks may be able to smell blood from miles away, but they probably don’t know how red it is.”

A study out of Australia suggests sharks are color-blind.

RELATED: A fisherman got the catch of his life by reeling in a massive hammerhead shark

Scientists examined the eyes of 17 sharks captured off the continent’s eastern and western coasts. No cone cells were found in 10 of the species, while only one type of cone cell was present in the remaining seven.

Cone cells are what help eyes distinguish colors. This lack of cone cells led scientists to believe that most, if not all, species of sharks are color-blind.

What do you think?

Artists to see at this weekend’s Windy City Smokeout

A man used one of the oldest excuses in the book when he was accused of having sexual relations with a minor