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Welcome to Dear Shark Man, an advice column inspired by a ridiculous e-mail I received. You can send your questions to me via twitter (@WhySharksMatter) or e-mail (WhySharksMatter at gmail). Dear Shark Man, Why do sharks tend to have those little notches in their tail fin? Is it like an aerodynamic thing? If you were to fill … Read More “Dear Shark Man, what’s the deal with those notches on shark tails?” »