過去大西洋鱘為數眾多,後來卻幾乎被捕撈殆盡。牠們要重返江湖了嗎? PHOTOGRAPH BY JOEL SARTORE, NATIONAL GEOGRAPHIC PHOTO ARK/NAT GEO IMAGE COLLECTION
這幅哈德遜河的側掃聲納影像,以全新的細節展現了大西洋鱘的身影。 PHOTOGRAPH BY JOHN MADSEN, UNIVERSITY OF DELAWARE
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