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marine biologist is on a mission to protect sharks. we met up in the bahamas. >> actually the marina we're in right now was one of the first shark-free marinas in the bahamas. >> reporter: shark are at the very top of the food chain, they grow slowly, mature early and produce young making them vulnerable to overfishing. >> we're supposed to have a certain number of sharks to control all these animals that are below them. they take out that apex an we allow a lot of other fish to breed beneath them. that leads to tropic collapse which means we don't have healthy ocean systems and we won't be able to pull food or product from there anymore. >> reporter: the bahamas band commercial shark fishing an that's help lure more divers and tourist dollars to the islands. we jump in to see some sharks up close.
became red hot after they were spotted on "sex skplt ciand the city" and a marina cho has a backstage pass to the shoe factory. >> made famous by "sex and the city," kristin louboutin is the shoe maker to the star. he doesn't just talk the talk, he walks the walk to those red-soled shoes. they're on oprah, beyonce, and the first lady of france. this year alone, he sold 700,000 pairs of shoes. but don't call this comfortable. >> if comfort were to come out of the design, i would be happy. >> what are you fighting for? >> beauty. >> beauty doesn't come cheap. louboutin's shoes can start at $3,500 and can skyrocket to 6,000, more if they're custom made. >> this is almost 6,000 u.s. dollars. why? >> why not? >> this is his laboratory. each season louboutin sketches 400 to 500 styles. about 150 are produced. each pair is carefully handmade, taking anywhere from a day to a ye year. m mademoiselle. >> louboutin is celebrating 25 years in business with a book and a lawsuit against another one that came out with, you guessed it, a red-soled shoe. >> i own a red lacquer sole on the ba
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