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© Gareth Jennings/ DCT Media Dane Carroll says he has turned his life around after serving time in prison and becoming a rap artist. It is a lifestyle that can trap people in a vicious cycle of prison and crime and sometimes ends in violence or worse. But one former drug dealer from Dundee has managed to turn his life around and wants to encourage others who feel they can never leave a life of crime behind. Ex-army sniper Dane Carroll, who releases music under the alias of Metagold, was found guilty of supplying class A drugs worth nearly £900,000 at the High Court in Edinburgh and sentence...

Swimming right off the coast. it's spring break, you know. you can see all those sharks in the waves there. black tips and spinners they tell us, part of the migration pattern. no troubles, right? >> no trouble with this wave of migratory sharks that did close the beach for a short time today. personally vouches these black tips do bite and it does hurt. this bloody proof happened to him last month. this huge school of black tips, winters in florida. migration north to georgia and south carolina. they do swim awfully close to people. >> basically they will come right up to the water line. as l...

There. all those are sharks. they were spotted just offshore. people in boca raton and singer island and boynton beach are among those on high alert. i'm joined now by john zarrella. john, how many sharks are we talking about? it looks like thousands from this video. >> reporter: you're absolutely right, don, could very well be thousands of sharks out there and it's unusual. this is the time of the year, they're like the snow birds, like the tourists, they come down to florida for the sunshine and the water and black tips, nearly all of them you see in the video are black tipped sharks althoug...

Jon: no, we are talking sharks, black tips and spinner sharks. spinner sharks get their name because as they are chasing their prey they leap out of the water and picture ow pirouette. there are thousands off the pwhraoefps o beaches of florida. jenna: i wouldn't mind seeing the spinning kind of thing. i don't need to be in the water to see that. this is maybe a good distance. jon: they are needing north up to the carolinas, and it's a little late this year, it's prime -- it's spring break. beachgoers being told to stay out of the water for obvious reasons. i'm a big character fan but you won'...

>> reporter: on this day at sea, the lemons keep coming. three black tips, too. the blood and tissue from these guys will be tested for concentrations of hydrocarbons from oil. they can be contaminated even if they never swim through the oil. >> the fishing area has been closed in the gulf of mexico because they don't want people to catch and eat that fish. i don't know if sharks got the memo. >> reporter: because it's a natural predator, a reduced shark population impacts the balance of nature. there will be enough work scientists say to keep researchers busy studying the effects of oil on sh...