7 Things You Didn’t Know About Hammerhead Sharks

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Hammerhead sharks are known for their unique head shape and wide-set eyes, which give them a better visual range than most other sharks, but there’s a lot more to learn about these distinctive fish than what you may already know.

FUN FACT The scientific genus name of most hammerhead sharks is Sphyrna, which comes from the Greek word for hammer. Some scientists have theorized that the hammer-like shape of the head may have evolved to enhance the shark’s vision. The hammerhead’s eyes are positioned on the sides of the shark’s flattened “hammer” head, which gives it 360-degree vision — in other words, the hammerhead can see above and below at all times. However, they have a huge blind spot directly in front of their nose.

FUN FACT There are nine species of hammerhead sharks. The great hammerhead is the largest, and typically measures about 13 feet long and weighs about 500 pounds.

SAD FACT Sharks are infamous for being labeled as the big, bad monsters of the sea, but there’s a monster out there that’s even more threatening — humans. Hammerheads are at a high risk for extinction because fishermen hunt them for their fins, which are considered a delicacy in some countries. After a hammerhead’s fin is sliced off, the fisherman will toss the creature back into the water. Unable to swim, the shark dies.

FUN FACT Hammerheads are found in both shallow and deep water. During summer, you can find large schools migrating to cooler water. Because they often school in shallow water, they are one of the few animals that can actually tan from exposure to the sun.

FUN FACT Like all sharks, hammerheads have electroreceptory sensory pores called ampullae of Lorenzini. Because of its unique head shape, the hammerhead can sweep the ocean floor for prey more effectively.

FUN FACT Fossil records for most sharks are scant since they do not have mineralized bones. Usually, it is their fossilized teeth alone that are commonly found. According to scientists’ DNA studies, the ancestor of the hammerheads probably lived about 20 million years ago.

VERONICA BREZINA

Source: Sport Diver

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