this is "nightline." tonight, sharks in the shadows. summertime close encounters. scares just feet from shore. >> o my god, i got it on video. >> attacks feeding into the frenzy. the science of our fear of what lurks behind the surface. plus, beyond beyonce, he's got the moves, the magic and the clients to prove it. the choreographer who helped queen bey get information for me watt perfor t sy the stage and his next move. and superstars. the women kick it.

team usa's next goal, the world cup finals. but first the "nightline" five.

good evening. thank you for joining us. with summer beach season in full swing, new waves of concern after a series of shark attacks and scares.

tonight the stories of survival and the scientist who's not afraid to take a deep dive with the dangerous predators. here's abc's diane macedo. >> reporter: it's every beachgoer's worst nightmare, coming face-to-face with the worst predator. now terrifying headlines across the globe. one killed in hawaii. the 65-year-old grandfather was swimming about 60 yards from shore when he was viciously mauled. three bitten in north carolina. >> i was like dad, please help me. >> is she awake and breathing? >> if she is, she's barely. she's in bad shape. >> reporter: a young woman tragically killed in the bahamas. >> jordan was fatally attacked. her mother feet away from her in the water. >> reporter: and this haunting green image cap fewertured by a father. >> the kids were standing in the

water. and i'm like, get out, get out, get out. >> i was like ripping him out of the water and trying to get limb out of the water when my mom was telling us to get out. >> reporter: the power of sharks has long terrified and fascinated people. but for jeremiah sul advanlivan decades-long study of sharks has led him on a quest to get even closer, his work documented in tv shows. >> oh, that was a close one! >> you have to figure out a way to work with sharks without disrupting their natural behaviors, and a cage in the water or safety divers or a bunch of other people tend to alter the behavior of the animals. >> reporter: he created a shark suit, a protective armor allowing him to study them without cages. how did the suit evolve? >> the majority of sharks

responsible for bites on humans are less than nine feet. these are reports when i was a young biology student. i'm thinking, okay, fine, we'll fix the worst problem. let's take care of that. exposing people safely to these kinds of animals in the right-structured circumstances and with the right information i think is a wonderful way to expose people to other creatures that we share the sea with. >> reporter: but so far his suits haven't been foolproof, unable to withstand the biggest of shark bites. now he's putting his latest id rags to the test. >> we make them in titanium and various other things. when you're making chum, frequently, the shark's sides are silvery. if you have a piece of fish in your hand it looks very similar to the hand. if he's coming in for the fish he could chew on you. >> reporter: i will never wear a

silver bathing suit again. >> reporter: after meeting jeremiah, i got up close and personal with sharks at the long island aquarium, protected by a cage. most people never get this close to sharks. and the reality shark bites are even rarer. >> you're about 30 times more likely to be struck by lightning and killed than you are to be bitten by a shark. you're about 100 times more likely to get in a car accident and get injured on your way to the beach. so shark bites are incredibly rare events. >> reporter: gavin is among the leadi leading shark experts. his team set out to tag deep-water sharks. >> if we look over the long decadal trends we see there is a very slight increase over the last 50 years. and we believe this is largely because there are a lot more people pursuing recreational watersports. however, two years ago, we saw a substantial dip in the number of

shark bites globally. >> oh! wow! >> reporter: he says we have an irrational fear of sharks, cultivated over the years by popular culture with films like "jaws" defining our image of the animals for generations. >> shark bites are horrific events, and they're tragic events. it creates this wave of angst that spreads throughout the local population. and it is, it's very violent and traumatic but a lot of things in nature are. >> reporter: something paige winter knows all too well. the 17-year-old told her story to my colleague, robin roberts just days after she was attacked off the coast of north carolina. >> how far away from shore were you? >> the deepest i got was waist-deep. >> reporter: she was swimming off atlantic beach with her family when the shark attacked. >> sometimes you go to the beach with your family and they grab your leg as a joke. and i was like, ha, ha, really

funny, ow. i start feeling around and i feel it. fwi from fro i go from front to back, is this a snapping turtle? what's happening. you know how a dog, they get a rope and you grab the other end of the rope and they start going with their whole body. >> reporter: she lost most of her left leg and sustained damage to both of her hands. >> i told her i was going to have to amputate her leg, and she said okay can i get a cool prosthetic? you can get whatever you want. >> reporter: paige doesn't blame the shark. >> this situation has urged me to learn more about sharks. because even in the back of that ambulance, i was like, don't get mad at the shark. i'm like, the shark is fine. >> can you help people understand why you feel that way? >> i've always liked animals more than i've liked people, you know. i think they don't do anything to people unless people do something to them.

and, you know, i didn't do something directly to the shark. but i was in his water, you know. that's his house. >> reporter: she's using the experience to raise awareness about the impact humans have on sharks. >> i love sharks. and let me tell you, 11,000 sharks are killed an hour. 97 million sharks are killed a year. >> reporter: most of the world's shark populations are in decline as a result of overfishing and habitat loss. >> it's estimated maybe a quarter of all shark species are threatened. with extinction. by contrast, there are perhaps on average six people that are killed at the hands of sharks every year. >> reporter: these days, mainl is undergoing therapy to learn to walk in her new prosthetic leg. >> i was aware from the beginning, nothing's ever going to be the same again. like, i'm still paigy, just a little different. i've got some pieces of the puzzle missing.

but that's okay. >> the shark didn't touch your spirit. >> it did not. >> reporter: for "nightline," i'm diane macedo. >> you can catch jeremiah sullivan checking out his suit in "man versus shark" during shark fest on nat geo. up next, the man with moves so flawless they're fit for beyonce. (doo ll rings) it's open! hey. this is amazing. with moderate to severe ulcerative colitis, are you okay? even when i was there, i never knew when my symptoms would keep us apart. so i talked to my doctor about humira. i learned humira can help get, and keep uc under control when other medications haven't worked well enough. and it helps people achieve control that lasts. so you can experience few or no symptoms. humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal infections and cancers,

including lymphoma, have happened; as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. before treatment, get tested for tb. tell your doctor if you've been to areas where certain fungal infections are common, and if you've had tb, hepatitis b, are prone to infections, or have flu-like symptoms or sores. don't start humira if you have an infection. be there for you, and them. ask your gastroenterologist about humira. with humira, control is possible. [what about him? let's do it. [ sniffing ]

come on. this summer, add a new member to the family. hurry into the mercedes-benz summer event today for exceptional offers. lease the glc 300 suv for just $419 a month at the mercedes-benz summer event. going on now. the in-laws have moved in with us. and our adult children are here. so we save by using tide. which means we use less. three generations of clothes cleaned in one wash. anybody seen my pants? #1 stain and odor fighter, #1 trusted. it's got to be tide.

♪ ♪

this is how driving should feel. the tech-advanced nissan leaf. the best selling electric vehicle of all time. this is nissan intelligent mobility. ♪ it'it's crepe dayday for a family traditiony's. we started about 22 minutes ago and now we can continue that tradition at home with free denny's delivery. see you at dennys.com what does it take to slay a

beyonce performance? chris grant has an idea. bringing her visions to life. tonight one on one with the man behind some of the sharpest acts to hit the stage. here's kim brooks. >> reporter: chris grant is a man in motion. a man in formation. the man behind some of beyonce's most iconic dance moves. now the 31-year-old is stepping out of the shadows to headline his own shows, spotlight his own voice. ♪ >> there's a lot that i do that people have no clue. i feel like i can say hey, i can do this on my own. i can get me some credit. >> reporter: and he deserves that credit. he has worked with queen for years. >> she's also family to me.

i look at her like a big sister. i've learned so much from her, so, so, so much. >> reporter: a force behind the scenes, he was there last year as the superstar got back in the dance studio after giving birth to her twins to prep for coachella. what is the choreography process look like? >> oh, my god, it's a long process. i'm there working hard, she was right there, getting in my neck. we would do it 50 times, like literally over and over and over. i was pushed to the limit. >> reporter: he landed on beyonce's team about ten years ago. he was just 20 years old. what is it like to teach her? >> it's amazing. she's my favorite. the best. ♪ i see it ♪ i want it >> reporter: he's been there from the super bowl to the netflix documentary "homecoming." bringing black culture to the

masses. >> that was her. she wanted to do it and show the world that this is art, this is not just some country black thing that shouldn't be praised. like we have to embrace this. >> reporter: he started danlsing at age 2 in the bronx, hughesic always an inspiration. >> while my cousins and friends were outside, throwing football, baseball, i was locked in my room watching videos all tay. >> reporter: now he makes those videos, like working with jennifer lopez in "on the floor." and made appearances with brandy, kesha cole and mariah carey. do you feel the pressure or responsibility to make something for somebody so great? what does that feel like? >> stress. stressful. but you just push through it, you know. and you find a positive in it. and i think what keeps me going is the fact that i love what i do. >> reporter: in 2009 grant got the opportunity to work with one of his childhood idols.

cast in what would have been michael jackson's farewell tour, "this is it." >> he was my first audition. >> reporter: ever? >> everybody. >> reporter: despite all his work with biggest icons, grant says he's not trying to be anyone other than himself. i told someone earlier, if i wasn't a journalist i would be a back backup dancer, specifically a beyonce backup dancer. what did you want to be when you were growing up? >> a singer. >> reporter: he's striking out on his own, turning his success in dance to music. his latest single "wristwatch" going viral. his popularity earning him a spot performing on the world stage at world pride in new york last weekend. grant invited me to rehearsals for the big show where he put

his team to the test with new choreo. >> you feel it when something is right. >> he has become my brother. i literally couldn't be any closer to him than blood. >> reporter: ashley is beyonc s dance captain and has been working with him for years. what do you think of his work ethic? >> we call him boyonce. he's like beyonce in boy form. it's beautiful and well deserved. >> reporter: and after an eight-hour rehearsal, he took a minute to teach me some moves. >> one more time. >> reporter: tell me about your pride performance. >> i just feel like i've been preparing my whole life for this, you know, and i just want people to see a different side of me. it's something different when you are up there and you get to let your magic shine. >> reporter: a big moment in

more ways than one. what does the lbgtq plus community mean to chris? >> equality. i'm so closely involved in it. i'm gay myself, know what i'm saying? and i want to embrace that. i don't want it to be something that's just hiding. >> reporter: is this the first time you're saying anything about it? >> yeah, i feel like you don't even have to say it. >> reporter: as the pride performance arrives, grant's whole team is top tier. his friend, anthony berrell is helping to execute grant's vision. this is the 50th anniversary of bride. >> i got chills just thinking about it. it's about love and support and breaking barriers, breaking boundaries. every single time i watch him, it's an experience i cannot explain. i'm witnessing greatness, the birth of a legend. >> reporter: it's the final moments before taking the

even chris rehearses. he eventually walks out at 1:00 a.m. the massive crowd still electric. performing the greatest hits of his best choreography, from beyonce to j. lo. before launching into his single "wristwatch." check the wristwatch ♪ ♪ say what you mean and -- ♪ you going to play yourself

>> reporter: there was even a surprise performance from star and friend brandy. grant grateful for all the support, including from his mother. what is next after that performance? >> my career. my, my, just me with my music. taking control of it. because it's just like, it's time. time is money, check the wristwatch. >> reporter: for "nightline," i'm kimberly brooks in new york. and next, the u.s. women's soccer team got all the right stuff. abc news "nightline,"

sponsored by entyvio. with moderate to severe ulceratiyour plans... crohn's, can change in minutes. your head wants to do one thing... but your gut says not today. if your current treatment isn't working... ask your doctor about entyvio®. entyvio® acts specifically in the gi tract, to prevent an excess of white blood cells from entering and causing damaging inflammation. entyvio® has helped many patients achieve long-term relief and remission. infusion and serious allergic reactions can happen during or after treatment. entyvio® may increase risk of infection, which can be serious. pml, a rare, serious, potentially fatal brain infection caused by a virus may be possible. tell your doctor if you have an infection experience frequent infections or have flu-like symptoms, or sores. liver problems can occur with entyvio®. ask your doctor about the only gi-focused biologic just for ulcerative colitis and crohn's. entyvio®. relief and remission

within reach. when crabe stronger...strong, with new nicorette coated ice mint. layered with flavor... it's the first and only coated nicotine lozenge. for an amazing taste... ...that outlasts your craving. new nicorette ice mint. the best way to hit the beach? with neutrogena® beach defense® sunscreen. helioplex® powered, uva, uvb strong. beach strength protection for the whole family. for the best day in the sun. neutrogena®. with advil liqui-gels, what stiff joints? what bad back? advil is... relief that's fast. strength that lasts. you'll ask...

what pain? with advil liqui-gels. after qualifying purchases when you apply and are approved for the hawaiian airlines world elite mastercard. plus, you earn miles on everyday purchases. get closer to the travels and moments you'll remember forever with this special offer. need another reason? enjoy an introductory no annual fee. to apply, visit hawaiianairlines.com honey, this gis ridiculously fast. we are seriously keeping up with the joneses. keeping up with the ford's. keeping up with the garcia's. the romeros. patels. the wahh-the-wahh wolanske's. right. no one is going to have internet like this. xfinity makes keeping up with the joneses simple. easy. awesome. want gig-speed internet?

we've got you covered. or check out our other amazing speed options. get started now for as low as $29.99 a month for 12 months. click, call or visit a store today. has been excellent. they really appreciate the military family and it really shows. with all that usaa offers why go with anybody else? we know their rates are good, we know that they're always going to take care of us. it was an instant savings and i should have changed a long time ago. it was funny because when we would call another insurance company, hey would say "oh we can't beat usaa" we're the webber family. we're the tenney's we're the hayles, and we're usaa members for life. ♪ get your usaa auto insurance quote today.

and finally tonight, go team

usa. thousands of fans in a frenzy in lyo lyonne france. goalkeeper alissa nair, nair, nr the penalty kick. next up, world cup finals. see you sunday morning for that one. what a victory. that's "nightline" for tonight. you can always kickback with our full episodes on hulu. thanks for the company, america. goodnight.