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why do sharks attack when they smell blood

So yeah, sharks love them some blood (or the amino acids inside our bodily fluids, anyway)Бand they can smell really well. But not
that well. If that whole "a shark can smell a drop of blood in a swimming pool" thing were true, sharks would be constantly. The Great White Shark can, which is about 1/25,000th the amount of water in an olympic pool. It's a period, not that scene from "Carrie" The average menstruating person loses about 30 to 40 ml of blood over the course of several days, maxing out around 80 ml for a really heavy cycle. Basically, if you suddenly got a super heavy period and just expelled all of that blood in one go (which, to be clear, is not how periods work), you'd be dumping about 6 tablespoons of blood into the ocean. This is also assuming you're out there without so much as a tampon to your name, which is really unfortunate given that you just got hit with a totally improbable period scenario! But rest assured, dumping a third of a cup of human blood into the ocean is unlikely to send nearby sharks into a feeding frenzy. And once again: that's not actually how periods work. Menstrual 'blood' isn't just blood. It's also, cervical mucus, and other totally normal secretions. Your standard menstruating swimmer is going to leave behind the tiniest traces of blood in the water, if any. Sharks don't want your stinking blood, anyway In a 2016 explainer on this same subjectБbecause yeah, people keep askingБ Broadly asked Steve Kajiura of Florida Atlantic University's Shark Lab for his input.

He made the point that even when sharks can smell human blood, it's not like they interpret it as a loudly clanging dinner bell. They're sniffing for the scent of their prey of choice. Sharks aren't even interested in blood so much as they are in detecting amino acids, the building blocks that make up the proteins in all of our bodily fluids. What they want to detect are the amino acids from the blood, guts, and gooey bits of marine animalsБthe creatures sharks evolved to eat. Our blood, sweat, tears, and cervical mucus are just static noise. "You can smell a landfill, but it won't make you want to eat it,". БThis is one of those misconceptions that refuses to die,Б Chris Lowe, a shark researcher at Cal State University of Long Beach, The Huffington Post in response to Hamilton's comments. БIn fact, the amount of blood loss during menstruation is probably less than average scrape or cut that a kid or surfer may get while playing in the water. Б "I've been diving for decades and even got my period while underwater with a school of hammerheads," Marie Levine, founder and executive director of the Shark Research Institute, Mother Jones back in 2012. "The sharks were not interested and I had to fin like crazy to get close to them. " But what if I'm really, really afraid of getting eaten by a shark?

Don't blame that on your menstruating friends! that the best way to avoid a shark attack is to keep swimming at a nice, consistent pace so sharks don't single you out as weak, easy prey. And hey: don't be a dummy when you're out in the surf, but try to remember that than the other way around. Sharks are at the top of the food chain. The ocean predators follow their instincts. The good news is that humans are not on their diet list. However, like us, they make mistakes, too. Swimmers and surfers are not sharks' favorite meal. They prefer sea lions, sea turtles, fish, whales, and seals. The majority of shark attacks occur near the shore, in the surf zone and sandbars, because their natural preys live in these areas. But attacks also take place in steep underwater drop-offs, where divers often swim. Sharks have to make quick decisions to capture food and, sometimes, the predator misinterprets humans for its natural food item. When that happens, sharks put their teeth to work and generate 40,000-pound of pressure per square inch that crush flesh and bones in the split of a second. The most deadly shark species are the white shark (Carcharodon carcharias), the tiger shark (Galeocerdo cuvier) and the bull shark (Carcharhinus leucas). There are three main types of unprovoked shark attacks: the hit-and-run attacks, the bump-and-bit attacks, and the sneak attacks.

In other words, sharks have three different attack strategies. In the hit-and-run attacks, the shark inflicts a small laceration on the victim, swims away, and never returns. It's the most common shark attack, the less dangerous, and usually involves surfers and swimmers. The bump-and-bite attack usually occurs in deep waters. The shark circles and bumps the victim before inflicting potentially deadly wounds. In sneak attacks, sharks appear without warning and bite their victims to death. Shark attacks are more likely to occur at dawn and dusk, precisely when they're more active searching for food. Also, because the visibility is limited during the twilight hours, sharks may mistake you for a prey animal or enemy. That is why you must avoid surfing alone in. The predator tends to attack individuals, rather than groups, so crowded lineups can have their advantages. Sharks smell and taste blood from a long distance, so people with open cuts and menstruating women should stay out of the water in areas known for regular attacks. But there's more: surfers catching waves after it rains, or in fishing and sewage-affected areas, carry a higher risk of being attacked by sharks. Contrasting colors in surfboards, wetsuits, and boardshorts, and shiny jewelry are also not a good idea. Take a look at the most surprising, learn how to, and explore the world of. For more on this topic, read ". "

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