we will track more of this coming up at 6:00 p.m. >> thanks so much for joining us. we will see more coming up at 6:00.

there is a growing mystery tonight about the identity of a young girl, her body found two weeks ago in a small patch of land in boston harbor. a computer image of the little girl produced a flood of online clicks but authorities have few clues to go on. we get more from nbc's ron mott. >> reporter: a computer-generated image of this little girl whose body was found two weeks ago has gotten nearly 50 million views online. and while authorities have tracked down dozens of leads, they are appealing to those closer to her. >> if you're the parent or caregiver of this young girl, please, step forward, clear your conscience and help us identify her. >> reporter: the so-called from scratch composite was created by the national center for missing and exploited children

using various photos from stock photos and enhancing from various details from the body. a woman walking her dog made the discovery june 25th on a rocky shoreline of deer island near boston logan's airport. >> everybody is aware of this right now, you know, and everybody is concerned. how can someone do that to a little baby? >> reporter: officials say the girl was around 4 years old in a pair of black and white polka dot leggings and a zebra blanket was found with her. >> all of this is going to take time to run through fingerprint and dna databases but this is a highly solvable case. >> reporter: the massachusetts state police is asking the public to be alert for any children who seem to have gone missing from their communities, their neighborhoods, schools, summer programs parks, churches or any other places where people gather. >> she deserves to have her identity known to the public and she deserves the kind of dignified burial of any human being. >> reporter: eyes and ears by the tens of millions, looking and listening for clues to put a name to this face. ron mott, nbc news,

boston. we're back in a moment with a scary scene in the ocean and unlikely gadget that aided the rescue.

a family credits a selfie stick for helping prevent a tragedy at sea. their gopro camera captured it all as they got caught in a rip current off nantucket but dad was able to grab the selfie stick his teenage daughter was holding to keep her from getting pulled away and then lifeguards and some good samaritans came to the rescue. tonight something we haven't seen since the frenzy over the boy wizard. amazon says harper lee's novel "go set a watchman" is the most preordered print title on the site since "harry potter and the deathly hallows" back in 2007. lee's new book which she wrote over half a century ago before "to kill a mockingbird" and only recently discovered is due out next tuesday. if your invitation to the royal christening was lost in the mail, here is the next best thing.

just-released pictures from the big day showing william and kate with their newborn princess charlotte in her gown with her big brother george and a big family portrait taken in the drawing room of queen elizabeth's country home. when we come back, we're going to need a bigger lens. the story behind the epic shark on shark photo bombing.

death of raiders quarterback ken stabler. ===janelle/take vo=== plus: police raid a major south bay pot club, after a string of n-b-c bay area investigations.

===next close=== the news is next. finally tonight, for a lot of us, these pictures around me are about as near as we'd like to get to a shark. but then there are people who are compelled to satisfy their curiosity about these imposing creatures by getting very up close and personal people like our own peter alexander. >> reporter: let's just agree if you can hear the shark mouthing off, you're too close but for those looking to get their money's worth, the only thing greater than one great white is two. back it up. how is that for aerial acrobatics? a week earlier, this jaw-dropping video, an 11-foot great white enjoying a closeup, the audience paying to be petrified. >> the teeth were very sharp and right in my face. >> reporter: she was in the cage. >> the video was just shocking. i mean, looking at it again, i felt everything all over.

>> reporter: it's one of the most notorious great white hunting grounds on earth where thrill seekers bait the giants to their boats. the same shark-infested waters in south africa where we dove in 2011 to see these feared predators eye to eye. beneath the surface it's silent, the murky waters only adding to your adrenaline before a 14-footer slides into view, then another, and they keep coming. once they pass they make contact and you stare into their eyes for a moment. >> reporter: to get a better look an international team of researchers has rigged up hundreds of underwater cameras. >> you think about sharks, big teeth in the ocean where we feel helpless, that can be scary but, you know, they are just such amazing predators. >> reporter: filling us with fear and exhilaration. peter alexander, nbc news. that will do it for us on this thursday night. we want to let you know, south carolina governor nikki haley will join matt lauer exclusively tomorrow morning on "today" as the confederate battle flag comes down from the state house

grounds. i'm lester holt, for all of us at nbc news, thank you and good night. area. dozens of ice officers swarm one of the biggest marijuana distributors in video you'll see only on nbc bay area. police officers swarm one of the biggest marijuana distributors. we have breaking news to share but. there is a cliff rescue going on right now in san francisco. it appears that two teenagers are trapped on a cliff side and firefighters say it is a tense situation. that rescue is happening under way at lands end along the trail that ends at dead man's point. firefighter the say where those

teenagers are, that cliff is crumbling, right where the sea meets the land. the teenagers are siblings 15 and 16. apparent lirks the teens had trouble telling rescuers where they are, but they did hear the sirens. firefighters are now in place. rescue crews in the water below. we have a crew headed to that scene and we will bring you more information as it gets into our newsroom. one of san jose's busiest pot shops is shut down. our hidden camera exposed a rogue pot shop not following the city's rules for medical marijuana dealers. tony kovaleski first reported the raid today on twitter. this is santa clara county d.a. sending a message, tony? >> reporter: no doubt. it's been more than eight hours since law enforcement swarmed this area.