Pregnant Stingray Offers Rare Lesson of Biology
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Charlotte has spent much of her life in captivity at a non-profit aquarium in North Carolina's Appalachian Mountains. She is an ocean animal called a round stingray.
She is about 3,700 kilometers fro...
Charlotte 一生中的大部分时间都在北卡罗来纳州阿巴拉契亚山脉的一家非营利性水族馆中度过。她是一种被称为圆黄貂鱼的海洋动物。
她距离南加州太平洋的自然栖息地约 3,700 公里。而且她至少有八年没有与同物种的雄性同住了。
但夏洛特...
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