Sand tiger sharks are born trained to defend themselves because they try to eat each other. Inside their mother's womb, sand tiger sharks have the lowest reproduction rate of all shark species. The sand tiger shark has two uterine with many embryos, but only two sharks are actually born. Many sharks develop in each uterus and they will eat each other until only one is left. Afterwards, the mother continues producing eggs that are eaten by the remaining sharks. It takes two full years for a sand tiger shark to be born. Eight to nine months before they're actually born, they're already fully developed. And in those eight to nine months, they basically just fight each other to the death. Hey guys, be sure to check out last week's video and remember to subscribe for more OMG facts.