World’s first ultrasounds of wild manta rays reveal a troubling truth
世界首次在野生蝠鲼上进行的超声波检查揭示了一个令人担忧的真相
Reef manta rays (pictured, an animal in Hawaii) are considered vulnerable to extinction due to pressures such as overfishing.
2024-04-15 词
At full term, the fetus folded up inside her womb had a wingspan of almost five feet, as wide as a park bench. But pregnancy only becomes visible after around six months, meaning scientists might not know a manta is pregnant until halfway through her 12.5-month gestation.
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