White Shark Sightings On The Rise On East Coast : NPR.

From NPR, I’m Ira Flatow.

Over the last few years, there have been more and more confirmed shark sightings at beaches on the East Coast, and this summer is no exception. Just last week, lifeguards closed part of Rockaway Beach, that’s here in Brooklyn, after surfers spotted a shark.

Further north, officials closed a remote beach in Cape Cod when a spotter of planes saw not one, not two but at least three great white sharks lurking near the shore a couple weeks ago. No one’s been allowed in the water since then.

And then just yesterday, Cape Cod’s Chatham Harbor was closed to swimming due to the sighting of a 14-foot great white shark. Scary, huh?

But before you call in Quint and his too-small shark boat in “Jaws,” to put this in perspective, there hasn’t been a fatal shark attack in New England since way back in 1936. So why are we spotting so many more great whites today?

Is their population growing, or are we just more paranoid and getting better at spotting them? Here to sort out some of the facts from fiction is my guest. Greg Skomal is a senior biologist at the Massachusetts Division of Marine Fisheries in New Bedford, Massachusetts. He joins us by phone. Welcome to SCIENCE FRIDAY, Dr. Skomal.

Dr. GREG SKOMAL (Senior Biologist Massachusetts Division of Marine Fisheries): Thank you, Ira. It’s good to be here.

FLATOW: Good, thank you. Are there more sharks these days, or are we seeing more of them?

Dr. SKOMAL: I think it’s a function, it’s a number of variables we’re dealing with here, and it’s hard for us to really tell if there’s more sharks or just simply more effort.

Certainly, a lot of the sightings along the East Coast of the United States have to do with more people utilizing the shoreline, utilizing the water for various recreational activities and otherwise.

But in think in some areas, specifically off the coast of Chatham, Massachusetts and Monomoy Island, we are indeed seeing more white sharks. And I think what we’re seeing is a shift in distribution of the white shark in that particular area.

FLATOW: And what is attracting them to that area?

Dr. SKOMAL: Over the course of the last couple of decades, we’ve been seeing a steady increase in the number of gray seals and a growing gray seal, resident gray seal population in that area. I believe it’s drawing these sharks closer to shore.

FLATOW: And why would we be seeing more gray seals now?

Dr. SKOMAL: Well, back in the early ’70s, we passed the Marine Mammal Protection Act, and it’s taken the last few decades for this population to actually recover to levels that pre-existed before we eradicated the species over the course of the last several decades. So we’ve got a growing population in response to protection by the U.S. and state governments.

FLATOW: So I guess what you’re saying is that we’re seeing a restoration of this coastal ecosystem to the way it used to be.

Dr. SKOMAL: Exactly, at least that’s the way we perceive it at this time. You know, we could be going back to what existed several hundred years ago, with a robust seal population being preyed upon by a robust white shark population.

FLATOW: 1-800-989-8255. We’re talking to Greg Skomal about the sightings of great white sharks along the East Coast. Maybe if you’ve seen one, you’d like to call in and talk about it. You can also Twitter us, send us a tweet @scifri, @-S-C-I-F-R-I. Or join the discussion on our website, on sciencefriday.com.

You, what do we you know, aside from watching “Jaws” and all the scary movies about sharks and Shark Week on cable channels everywhere, how much do we really know about white shark populations?

Dr. SKOMAL: Well, there are certain parts of the world where you can predictably find white sharks. And these areas, which include, you know, the Pacific Coast, California, parts of South Africa and South Australia – these are areas where scientists have had the luxury, if you will, of going out and studying these animals at great levels.

And we’ve been able to garner quite a bit about their biology in those areas, I think. One of the spots that we know very little about the white shark is the Atlantic Ocean. And perhaps, this change in ecosystem that we’re going through up here in New England, may begin to provide us some access to these animals so we can start to tease away some aspects of their biology.

FLATOW: And you are involved in tagging sharks, are you not?

Dr. SKOMAL: Correct, correct. Yeah, last year we had a chance, for the first time, to put satellite-based technology tags on white sharks in this area, and we are already getting insights into their biology from those tags.

And already this year, we’ve placed four tags out, and we hope to be able to continue to do that over the course of the next month.

FLATOW: How do you get, you know, how do you know when it is time to reopen these beaches that have been closed?

Dr. SKOMAL: Well, you know, the local municipalities are in charge of those beaches, and all we can do at the Division of Marine Fisheries is provide information to those folks who are making these decisions.

You know, we’d like to provide real-time information on the presence of sharks as acquired through our research activities so they can make well-founded decisions on opening and closing beaches.

FLATOW: What are the odds of getting bitten by a shark?

Dr. SKOMAL: Well, you yourself indicated that the last fatal attack in Massachusetts was back in the 1930s. So that gives you a sense of what the probability is. That being said, I think it’s important to realize when you place people in close proximity to the prey of sharks, namely gray seals, you could potentially increase the risk modestly.

So I think it’s important for people to make wise decisions when getting in the water and choose areas that may be free of white shark prey.

FLATOW: Henry(ph) in Aurora, Illinois. Hi, welcome to SCIENCE FRIDAY.

HENRY (Caller): Hello there. Being landlocked, I just have an idea that possibly, there’s less fish out there for the sharks to feed on because you could ask any fishermen why are they still in port. And the sharks will wander farther around, looking for food. That’s my idea. Thank you.

FLATOW: You’re welcome.

Dr. SKOMAL: Well, I’ll tell you, that’s an interesting point, and it points to fisheries management and population management and the importance of looking at bait species and to find relationships between sharks and their prey and whether or not we’re, you know, overexploiting their prey and forcing sharks to other areas to exploit other resources.

That being said, I think it’s well-defined, the behavior of the white shark, when it comes to feeding, these animals are clearly going through, clearly prefer larger prey, namely marine mammals and specifically seals and sea lions.

So I think what we have going on off the coast of New England is actually just a national predator-prey relationship and not anything exacerbated, perhaps, by humans.

FLATOW: Let’s go to Roy(ph) in Sumter, South Carolina. Hi, Roy.

ROY (Caller): Hi, thank you so much for taking the call and specifically on this topic. It’s always been an interest. I’ve been recreational fishing in the Atlantic for 30 years. And over the last three or four years, we’ve noticed a tremendous increase in the number of small sharks that we’re catching.

It used to be something, we may catch one shark every two or three trips, and now we probably catch 10 sharks every trip. These we refer to them as bonnetheads. I dont know if that’s an accurate terminology, about a three, three-and-a-half-foot long shark, always catch them on the bottom, never catch them trawling. And I’ll take my answer off the air, but again, thank you so much for this topic.

FLATOW: All right. Could there be many big sharks because there are a lot more little sharks now?

Dr. SKOMAL: Well, you know, the bonnethead is indeed a species. It’s considered to be a healthy population off the Southeastern U.S., according to the fisheries’ statisticians. It’s not a fish that’s heavily exploited commercially, although it is sold in some numbers, and recreational fishermen like to catch it, as well.

You know, there are some folks who believe – some scientists who believe that with the removal of very, very large sharks that consume these smaller sharks, we’re seeing more species, you know, more smaller sharks out there. That may be the case, although it hasn’t been clearly demonstrated by scientists.

So it’s an area where there is quite a bit of work, but we have no real conclusions yet.

FLATOW: Have sharks been over hunted?

Dr. SKOMAL: In certain parts of the world with certain populations, absolutely. We have enough information on, for example, the dusky shark to indicate that that population off the Eastern U.S. has been overexploited and reduced dramatically.

The same is true for the sandbar shark. For other populations of sharks, they continue to be robust, and I think the bonnethead falls into that.

FLATOW: All right, let me go to Mark(ph) in New Britain, Connecticut. Hi, Mark.

MARK (Caller): Hi, thanks for taking my call. As you said, I’m in Connecticut, and I’ve noticed changes in the water temperature of Long Island Sound. It’s been creeping up, year over year, and I’m wondering if the climatic changes, increases in ocean temperature, are a possible source of increased activity.

FLATOW: Good question.

Dr. SKOMAL: Yes, an excellent question, one we anticipate a lot of research trying to answer over the course of the next decade. We know that with climate change and global warming, we’re going to see changes in the structure of fish populations in terms of the diversity of species, with a shift north of tropical species.

And it has been demonstrated for some, already. I imagine with warming water temperatures in Long Island Sound, you’re going to see a change in the fish diversity in that body of water, as well.

So, you know, it’s an area that we’re going into. We anticipate changes, and some of them have been documented. In terms of sharks, we haven’t seen any kind of dramatic shift as of yet, but some of the species that typically occur south of Cape Cod and not north, have indeed been starting to creep around the Cape. So we’re starting to see some indications that the fish populations, including sharks, are changing.

FLATOW: Steve(ph) in Cambridge, Mass. Hi, Steve.

STEVE (Caller): Hey, how are you doing? Thanks for taking the call. Great show. I think the shark thing is just a bunch of media hype, frankly. I mean, it just, you know, it makes people tune into the news shows, and I’m not sure there’s any more or less. I just think the sightings are more – maybe because there’s more fishermen out there.

But I was wondering if you might know why there’s a lot more jellyfish in the bay this year.

(Soundbite of laughter)

Dr. SKOMAL: Well, you bring up a couple of excellent points, and a lot of the shark phenomenon, or shark frenzy, if you will, is driven by the media – and it’s something we have to deal with all the time.

I can tell you that some of the shark sightings data absolutely indicate a shift that’s going on over with white sharks, and some of it’s just generated by a media frenzy. Somebody sees a fin, it may not be a shark fin, but it gets reported as such, and that just compounds upon itself.

I wish I could be of more help with you with jellyfish. I’ve been hearing a lot of folks complain about jellyfish in the bay over the last several weeks, but unfortunately, I study things a lot bigger.

FLATOW: All right, we’ll have to take a look at that, with some jellyfish folks, on a future program. But I want to thank you for taking time to be with us today.

Dr. SKOMAL: Oh, my pleasure. It’s great to be here.

FLATOW: Have a good weekend.

Dr. SKOMAL: Yes, you, too.

FLATOW: Greg Skomal is a senior biologist in the Massachusetts Division of Marine Fisheries in New Bedford, Mass., and he was joining us by phone from there.

When we come back, we’re going to switch to electric cars, plug-ins. Do you want a plug-in? How about a Chevy Volt or a Nissan Leaf? We’re going to compare the two. Maybe you could talk to us about what you’d like to see the perfect plug-in to be. What would you are these two cars the kind you might purchase? If not, what do you want to have?

Our number, 1-800-989-8255. You can tweet us @scifri, @-S-C-I-F-R-I, or go to our website at sciencefriday.com, where you can chat around with some folks that way.

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(Soundbite of music)

FLATOW: I’m Ira Flatow. This is SCIENCE FRIDAY from NPR.

ANCHORAGE, Alaska – An Australian tourist thinks it was an eagle that dive-bombed him as he was walking alone in Cooper Landing, about 100 miles south of Anchorage.

Brian Hard told The Anchorage Daily News a large bird swooped down Monday afternoon.

“It was a beautiful day and I was quite content, when all of a sudden I had this sensation of eagle grabbing on, sinking a talon into my head,” he said. “When it hit me, I kind of ducked down and its trajectory took it back up. I sort of looked up and its wings were spread; I had the sensation of being shaded. Looked like a young eagle to me.”

Hard says he feared a second attack before he made it about 100 yards to the home where he is staying.

“Skin was actually raised off my scalp,” he said. “I felt the bleeding.”

The visitor from Cape York Peninsula in Queensland wonders if he was mistaken for prey.

“Somebody suggested I kind of looked like a rabbit from the sky,” said Hard, who wears his gray hair in a ponytail. “I can sort of understand why it happened to me.”

Fish and Wildlife Service raptor export Phil Schempf in Juneau thinks the bird was a goshawk, which is more likely than an eagle to attack people close to their nests.

“Eagles tend to be pretty wimpy. I can count on one finger the number of eagle attacks I've seen,” he said. “I wonder if he was mixing up his birds and it was a goshawk. In your face, a goshawk looks pretty big.”

via Raptor attacks Australian tourist in Alaska: AP Alaska | adn.com.

JACKSONVILLE BEACH – A woman bitten on the leg in the ocean near 16th Avenue South has prompted the annual summer vigilance for potential shark activity.

The 18-year-old woman was bitten about 2 p.m. Thursday in waist-deep water a few feet from shore, said Jacksonville Beach Ocean Rescue Capt. Thomas Wright. She was treated at Baptist Medical Center-Beaches for the minor bite wound, which was described as an outline of a small mouth with teeth.

Wright said the woman was bitten by something, but officials aren't sure it was a shark. Barracudas, bluefish and stingrays can bite or sting, he said.

“Unless it's a missing limb or something, I wouldn't necessarily call it a shark attack,” said Wright. “It's likely there is a lot of life in the water right now. The water's warming up.”

He said sharks, such as black tips and spinners, are migrating to their nursing grounds as far north as North Carolina.

Lifeguards along Jacksonville's Beaches haven't spotted large numbers of sharks recently, he said.

The incident had little impact on beachgoers. Many people were still in the water near the site after it happened Thursday. Even more people were at the beach Friday, since that was the last day of classes for many schools.

Jacksonville Beach Mayor Fland Sharp said he doesn't want to downplay any attack. But beachgoers have acclimated to the ocean's realities.

“We've had a shark attack what seems like every two or three years,” Sharp said. “There were a couple things that looked like they were shark bites and a couple things looked like it was something else.”

Sharp, a former lifeguard, said people should keep shark threats in perspective.

“If I was coming down here and felt a little uncomfortable, just walk up to a lifeguard on a chair” and ask if there are any reported shark sightings, he said. “I think the odds are much greater of being struck by lightning.”

Sharp said there are some simple rules to follow.

“In the summertime, there are pods of bait fish that come close to shore,” he said. “You definitely don't want to go swimming around those because there are sharks and other kinds of fish that are feeding around those. There are sharks here and you just have to use some common sense about it.”

Wright said it has been about four years since a shark attack in the area and that was at the Jacksonville Beach Pier off Fourth Avenue North. The woman's injuries were minor then, too. He advised swimmers to remember the ocean is the shark's habitat.

“Just know that is their home and they are out there all the time,” said Wright. “Just because you don't see fins swimming by like the movie “Jaws” doesn't mean they're not there. If you're concerned about being bit or anything, you probably shouldn't go out there.”

via Attack on woman in Jacksonville Beach waters may have been shark, raises concern | jacksonville.com.

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Great Smoky Mountains National Park officials euthanized a 60-pound female black bear Thursday afternoon that attacked a hiker and ended up becoming an Internet cause celebre.

Wildlife biologists determined the young bear that park rangers captured May 13 bit the foot of an unidentified man who got too close with a camera as he was hiking along the popular Laurel Falls Trail the day before.

Park spokeswoman Nancy Gray said park policy dictates that all animals who attack humans must be euthanized. The bear was put down “in a humane manner,” according to a National Park Service news release Thursday.

A visitor’s photographs and the behavior of other bears in the area confirmed park rangers had captured the correct bear, the release stated.

Gray said their decision lessens the possibility of future incidents.

“We cannot take the risk of putting this bear around people again when it has already done some harm,” she said. “It is in the best interest of all to euthanize the bear.”

A Facebook group with more than 5,000 fans formed in an attempt to save the bear, which they named “Laurel.”

Patty Lanke, who created the group, said conditioning the bear to eat human food sealed its fate.

“(The hiker) was wrong for doing what he did, whether the bear approached him or not,” Lanke said.

Some commenters on the Facebook page incorrectly stated that the Appalachian Bear Rescue, an organization in Townsend that rehabilitates black bears, had offered to take the bear into custody.

Lisa Stewart, the rescue’s curator, said the case was out of their hands.

“We are just as devastated as the people following the Facebook page, but people get confused about what we do,” she said. “We are not permitted to go out and capture bears. We wait for wildlife officials to bring one in.”

Stewart said ABR agrees to rehabilitate bears, but only if they can be released back into the wild. She said because of the circumstances, the young bear could never be returned.

Jack Burgin, the bear rescue’s president, said their research shows an attempt to rehabilitate bears who become accustomed to humans would not work.

“Early on we did studies, working with UT and other places to do reverse conditioning, but they were uniformly unsuccessful,” he said. “It doesn’t take much for them to realize, ‘This is good food and I want more of it.’”

Burgin said he knows the park’s decision to euthanize the bear was difficult.

“The last thing they want to do is put this bear down, but they have a lot of things to consider,” he said.