And being able to tell the gender of a shark has got very important for things like policing the trade in basking shark and other species through societies, because it is illegal to trade any sharks.
如果能够告诉他们姥鲨的性别 就变得意义非凡 比如监管贸易往来 在姥鲨和其他物种之间 因为这是不合法的