Why some scientists want to rebrand shark attacks as 'negative encounters' - CBC.ca | Canada News Media
Connect with us

Science

Why some scientists want to rebrand shark attacks as 'negative encounters' – CBC.ca

Published

 on


Read Story Transcript

Dropping the phrase “shark attack” is a great way to change the narrative about the much-maligned sea creatures, says marine scientist Toby Daly-Engel.

Last week, the Sydney Morning Herald reported that scientists in two Australian states are moving away from that term in favour of more neutral language, like “bites,” “incidents” or “negative encounters.”

The story drew swift mockery online, as well as backlash from an organization that represents people who have been injured by sharks

But Daly-Engel, director of the Florida Tech Shark Conservation Lab, says we’re long overdue for a language shift when it comes to the misunderstood ocean dwellers, which are at a greater risk from humans than vice versa.

Here is part of her conversation with As It Happens guest host Susan Bonner. 

What do you make of the Australian decision to rebrand shark attacks?

I think it’s a really good step in the right direction, because for a long time we’ve known that [with] shark attacks, it really depends on people, not on sharks. And so trying to rebrand these interactions in a way that more accurately represents the event is really good as far as we’re concerned.

But this is being mocked quite a bit, especially the suggested terminology, “negative” shark “encounters.” Isn’t a shark attack sometimes just a shark attack?

Actually, most shark attacks are what we call provoked, meaning they are instigated by humans. And so the notion of a shark attack kind of conjures an attack out of the blue by some sort of mindless, bloodthirsty predator. And in reality, that’s not it at all.

Most things that get labelled by the media as shark attack are things like people poking sharks underwater, chumming where people are swimming or doing other things that really create a situation where somebody might be hurt by a shark. 

But the vast majority of these interactions are not actually due to the shark. And so the notion of shark attack, even though it’s the most recognizable terminology, it’s really inaccurate.

I guess, though, if a shark is biting you, whether it’s being called an attack or an interaction isn’t really the first thing on your mind.

Sure. But at the same time, in general, sharks have, in reality, way more to fear from humans than we do from them. 

Shark attack[s are] monumentally rare, more rare than being bitten by someone from New York, statistically speaking. Whereas humans are — conservatively, this is an underestimate — we’re taking at least 100 million sharks out of the ocean every year.

And what we’re finding as scientists is that [sharks] … reproduce more slowly than we realized, even more slowly than people. And so many, many shark populations are really in trouble. And that’s not good because sharks as predators are really helpful for keeping the rest of the food items, the prey in the food web, in check and keeping them in balance.

The terminology may sound unnatural or silly to some people, but that’s because most people’s concept of what is a shark attack is really based on the rarest kind.– Toby Daly-Engel, marine scientist 

What kind of a difference do you believe this change of terminology could mean for how people view sharks?

I hope that it sheds light on the fact that sharks have more to fear from us than we do from them.

Like I said, the terminology may sound unnatural or silly to some people, but that’s because most people’s concept of what is a shark attack is really based on the rarest kind. 

Sharks are much more careful, much more fragile than people realize. They’re very long lived. Some species we now know can live over 400 years. They’re more likely to scavenge dead prey than they are to attack live prey, because their natural prey has things like spines and claws and beaks that can hurt them.

So when an attack occurs on a human, it’s because we are in their environment and they mistake us for a natural prey item, or they don’t know what we are and they go to figure it out with. Like dogs and babies, sharks can only really figure things out using their mouths.

A woman floating on the surface of the water in Compass Cay in the Exumas, as nurse sharks swim beneath her. Scientists say that despite pop culture depictions, most sharks are small to medium-sized. (Khaichuin Sim/Getty Images)

A spokesperson for a group representing people who have been bitten by sharks told the [Sydney Morning Herald] that he’s worried about “sanitizing” shark bites. What would you say to him?

I would say that shark attacks in general are going down per capita, even though the number of people that are in the water is going up. And that’s because we know we’ve lost up to 70 per cent of all sharks just in the last 50 years. And that is going to have grave consequences on our ocean health.

Anybody who likes the ocean, likes seeing fish in the ocean, all of that diversity is in danger without the predators. And most sharks are not at the top of the food chain. Most sharks are not what we think of as apex predators. There’s not that many massive ones. Most sharks are these cute little medium-sized things. They are both predator and prey. And without them, what we see is what’s called extinction cascade.

Considering you’re more likely to get struck by lightning … than bitten by a shark, considering you’re more likely to be killed by a vending machine than a shark, I think that there is very little chance of this type of measure minimizing shark attack. It has a much better chance of kind of helping people to understand that most of what the media calls shark attacks are really not the shark’s fault. They’re really just due to people.

Maybe we need some horror movies about vending machine attacks and New York City bite attacks.

I mean, just don’t shake them. Like, if you can’t get your chips out, just leave them there. That’s all I can say.

But after movies like Jaws and the innate fear that people have about sharks, is rebranding really going to make much of a difference here?

Even if there’s some mockery, there’s some silliness, regardless of this kind of attention, if it can help people understand the role that sharks play in the ecosystem and how mistaken our ideas are about shark attack, then, yeah, maybe it’ll do a little bit of good.

Sharks are feared. There are very few laws protecting them. And yet we know that these things grow more slowly and reproduce more slowly than just about any animal on Earth. And so they are incredibly in need of protection.

So every little bit can help because there’s not a lot of, you know, big movements out there for shark advocacy. There’s no such thing as shark-safe tuna, for instance. So I think because there is that fear, it’s even more important that institutions speak up on behalf of these animals, which are really, really important to the health of our planet’s oceans. 


Written by Sheena Goodyear. Interview produced by Chris Harbord. Q&A has been edited by length and clarity.

Adblock test (Why?)



Source link

Continue Reading

News

The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

Published

 on

 

TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

Source link

Continue Reading

News

B.C. sets up a panel on bear deaths, will review conservation officer training

Published

 on

 

VICTORIA – The British Columbia government is partnering with a bear welfare group to reduce the number of bears being euthanized in the province.

Nicholas Scapillati, executive director of Grizzly Bear Foundation, said Monday that it comes after months-long discussions with the province on how to protect bears, with the goal to give the animals a “better and second chance at life in the wild.”

Scapillati said what’s exciting about the project is that the government is open to working with outside experts and the public.

“So, they’ll be working through Indigenous knowledge and scientific understanding, bringing in the latest techniques and training expertise from leading experts,” he said in an interview.

B.C. government data show conservation officers destroyed 603 black bears and 23 grizzly bears in 2023, while 154 black bears were killed by officers in the first six months of this year.

Scapillati said the group will publish a report with recommendations by next spring, while an independent oversight committee will be set up to review all bear encounters with conservation officers to provide advice to the government.

Environment Minister George Heyman said in a statement that they are looking for new ways to ensure conservation officers “have the trust of the communities they serve,” and the panel will make recommendations to enhance officer training and improve policies.

Lesley Fox, with the wildlife protection group The Fur-Bearers, said they’ve been calling for such a committee for decades.

“This move demonstrates the government is listening,” said Fox. “I suspect, because of the impending election, their listening skills are potentially a little sharper than they normally are.”

Fox said the partnership came from “a place of long frustration” as provincial conservation officers kill more than 500 black bears every year on average, and the public is “no longer tolerating this kind of approach.”

“I think that the conservation officer service and the B.C. government are aware they need to change, and certainly the public has been asking for it,” said Fox.

Fox said there’s a lot of optimism about the new partnership, but, as with any government, there will likely be a lot of red tape to get through.

“I think speed is going to be important, whether or not the committee has the ability to make change and make change relatively quickly without having to study an issue to death, ” said Fox.

This report by The Canadian Press was first published Sept. 9, 2024.

The Canadian Press. All rights reserved.

Source link

Continue Reading

Science

Asteroid Apophis will visit Earth in 2029, and this European satellite will be along for the ride

Published

 on

The European Space Agency is fast-tracking a new mission called Ramses, which will fly to near-Earth asteroid 99942 Apophis and join the space rock in 2029 when it comes very close to our planet — closer even than the region where geosynchronous satellites sit.

Ramses is short for Rapid Apophis Mission for Space Safety and, as its name suggests, is the next phase in humanity’s efforts to learn more about near-Earth asteroids (NEOs) and how we might deflect them should one ever be discovered on a collision course with planet Earth.

In order to launch in time to rendezvous with Apophis in February 2029, scientists at the European Space Agency have been given permission to start planning Ramses even before the multinational space agency officially adopts the mission. The sanctioning and appropriation of funding for the Ramses mission will hopefully take place at ESA’s Ministerial Council meeting (involving representatives from each of ESA’s member states) in November of 2025. To arrive at Apophis in February 2029, launch would have to take place in April 2028, the agency says.

This is a big deal because large asteroids don’t come this close to Earth very often. It is thus scientifically precious that, on April 13, 2029, Apophis will pass within 19,794 miles (31,860 kilometers) of Earth. For comparison, geosynchronous orbit is 22,236 miles (35,786 km) above Earth’s surface. Such close fly-bys by asteroids hundreds of meters across (Apophis is about 1,230 feet, or 375 meters, across) only occur on average once every 5,000 to 10,000 years. Miss this one, and we’ve got a long time to wait for the next.

When Apophis was discovered in 2004, it was for a short time the most dangerous asteroid known, being classified as having the potential to impact with Earth possibly in 2029, 2036, or 2068. Should an asteroid of its size strike Earth, it could gouge out a crater several kilometers across and devastate a country with shock waves, flash heating and earth tremors. If it crashed down in the ocean, it could send a towering tsunami to devastate coastlines in multiple countries.

Over time, as our knowledge of Apophis’ orbit became more refined, however, the risk of impact  greatly went down. Radar observations of the asteroid in March of 2021 reduced the uncertainty in Apophis’ orbit from hundreds of kilometers to just a few kilometers, finally removing any lingering worries about an impact — at least for the next 100 years. (Beyond 100 years, asteroid orbits can become too unpredictable to plot with any accuracy, but there’s currently no suggestion that an impact will occur after 100 years.) So, Earth is expected to be perfectly safe in 2029 when Apophis comes through. Still, scientists want to see how Apophis responds by coming so close to Earth and entering our planet’s gravitational field.

“There is still so much we have yet to learn about asteroids but, until now, we have had to travel deep into the solar system to study them and perform experiments ourselves to interact with their surface,” said Patrick Michel, who is the Director of Research at CNRS at Observatoire de la Côte d’Azur in Nice, France, in a statement. “Nature is bringing one to us and conducting the experiment itself. All we need to do is watch as Apophis is stretched and squeezed by strong tidal forces that may trigger landslides and other disturbances and reveal new material from beneath the surface.”

The Goldstone radar’s imagery of asteroid 99942 Apophis as it made its closest approach to Earth, in March 2021. (Image credit: NASA/JPL–Caltech/NSF/AUI/GBO)

By arriving at Apophis before the asteroid’s close encounter with Earth, and sticking with it throughout the flyby and beyond, Ramses will be in prime position to conduct before-and-after surveys to see how Apophis reacts to Earth. By looking for disturbances Earth’s gravitational tidal forces trigger on the asteroid’s surface, Ramses will be able to learn about Apophis’ internal structure, density, porosity and composition, all of which are characteristics that we would need to first understand before considering how best to deflect a similar asteroid were one ever found to be on a collision course with our world.

Besides assisting in protecting Earth, learning about Apophis will give scientists further insights into how similar asteroids formed in the early solar system, and, in the process, how  planets (including Earth) formed out of the same material.

One way we already know Earth will affect Apophis is by changing its orbit. Currently, Apophis is categorized as an Aten-type asteroid, which is what we call the class of near-Earth objects that have a shorter orbit around the sun than Earth does. Apophis currently gets as far as 0.92 astronomical units (137.6 million km, or 85.5 million miles) from the sun. However, our planet will give Apophis a gravitational nudge that will enlarge its orbit to 1.1 astronomical units (164.6 million km, or 102 million miles), such that its orbital period becomes longer than Earth’s.

It will then be classed as an Apollo-type asteroid.

Ramses won’t be alone in tracking Apophis. NASA has repurposed their OSIRIS-REx mission, which returned a sample from another near-Earth asteroid, 101955 Bennu, in 2023. However, the spacecraft, renamed OSIRIS-APEX (Apophis Explorer), won’t arrive at the asteroid until April 23, 2029, ten days after the close encounter with Earth. OSIRIS-APEX will initially perform a flyby of Apophis at a distance of about 2,500 miles (4,000 km) from the object, then return in June that year to settle into orbit around Apophis for an 18-month mission.

Related Stories:

Furthermore, the European Space Agency still plans on launching its Hera spacecraft in October 2024 to follow-up on the DART mission to the double asteroid Didymos and Dimorphos. DART impacted the latter in a test of kinetic impactor capabilities for potentially changing a hazardous asteroid’s orbit around our planet. Hera will survey the binary asteroid system and observe the crater made by DART’s sacrifice to gain a better understanding of Dimorphos’ structure and composition post-impact, so that we can place the results in context.

The more near-Earth asteroids like Dimorphos and Apophis that we study, the greater that context becomes. Perhaps, one day, the understanding that we have gained from these missions will indeed save our planet.

 

Source link

Continue Reading

Trending

Exit mobile version