yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

The Dangers of Shark Nets | When Sharks Attack


2m read
·Nov 11, 2024

For the past 20 years, New South Wales averaged four shark attacks a year. But in 2009, a staggering 17 attacks occurred, with species ranging from white sharks to wobble gong sharks. With such a variety of species behind the spike, investigators focused on something that affects them all. Marine biologist Holly Richmond heads out to investigate.

She dives in to get a closer look at shark nets, first deployed in 1937. They're at more than 50 public beaches across New South Wales, typically around 200 yards offshore. These meshings form an underwater fence with a simple purpose. Basically, shark nets are a culling device, so their aim is to catch and kill sharks.

Supporters of the program believe that they've helped keep sharks away from innocent beachgoers. But critics contend there's a harmful downside. Putting a net in the ocean, you're going to catch a variety of different animals: rays, dolphins, whales, sea turtles. There have been dugongs up north. There's a variety of different animals. Pretty much anything that's in the ocean is going to get entangled in these nets, and all this bycatch could have an unintended side effect tied to one of a shark's most important senses.

Shark expert Dr. Vick Petamores cuts in to get a look. "The brain is really the center point for all the different senses, so that it can detect food and other animals in the environment. If there's bycatch stuck in a net, a shark will use two of its senses. Sharks have got a really, really good sense of smell, and it allows them a really acute ability to detect fish blood and unusual smells in the water. Additionally, sharks use their lateral line system to detect the prey item moving in the water. So bycatch could, in fact, draw sharks closer to the nets that are intended to keep them away."

In 2009, reports emerged that holes had formed in shark nets similar to those deployed in New South Wales. Could sharks, drawn in by bycatch, be slipping through flawed nets and coming into contact with humans? [Music] [Music] You.

More Articles

View All
A day in the life of a PRODUCTIVITY NINJA🥷🏻📚⏰🥷🏻
Hi guys, it’s me Judy. I’m back with another vlog! You guys have been asking me, “What the hell are you doing if you’re taking a break from med school?” So I decided to answer your guys’s question and show what my typical day looks like. I’ve been doing …
Do Shark Stories Help Sharks? | Podcast | Overheard at National Geographic
Oh my god, it smells so good. That was the thing when you were driving down to the store as a kid and you had the windows down; it’s all salt water. I’m standing on a beach at the Jersey Shore, looking out at the Atlantic Ocean. So, on a typical summer da…
Mohnish Pabrai: How to Invest Like Warren Buffett & Charlie Munger
People think that entrepreneurs take risk and they get rewarded because they take risk. In reality, entrepreneurs do everything they can to minimize risk. They are not interested in taking risk; they want free lunches, and they go after free lunches. So i…
Are There Lost Alien Civilizations in Our Past?
When we think about alien civilizations, we tend to look into the vastness of space, to far away planets. But there is another incredibly vast dimension that we might be giving too little thought to: time. Could it be that, over the last hundreds of milli…
Geometric series word problems: hike | Algebra 2 | Khan Academy
We’re told Sloan went on a four-day hiking trip. Each day she walked 20 more than the distance that she walked the day before. She walked a total of 27 kilometers. What is the distance Sloan walked on the first day of the trip? It says to round our final …
Ideologies of political parties in the United States | US government and civics | Khan Academy
What we’re going to do in this video is talk about the two major ideologies you will hear about in the United States, and that’s the liberal ideology and the conservative ideology. The liberal ideology is often associated with the Democratic Party, and t…