灰色护士鲨是一种相貌凶猛,但性格温驯的鲨鱼。尽管从1984年开始,澳大利亚就宣布它为濒临灭绝物种,同时对它的栖息地采取保护措施,但科学家称,在未来20年内,护士鲨将灭绝于澳洲东海岸。人工培育灰色护士鲨的关键,是避免“子宫内自相残杀”过程。正如鱼类海洋生物学家尼克·奥特韦所说的那样:”幼胎一旦长到10厘 Gray nurse shark is a ferocious, but gentle character shark. Although Australia has declared it a species of endangered species since 1984, while protecting its habitat, scientists say nurse sharks will be extinct on the east coast of Australia over the next 20 years. The key to nurturing a gray nurse shark is to avoid “cannibalism” in the womb. As the fish marine biologist Nick Otway said: "Once the baby has grown to 10%