Discovery - Why a dolphin鈥檚 dorsal fin is like a fingerprint - 成人快手 Sounds

Discovery - Why a dolphin鈥檚 dorsal fin is like a fingerprint - 成人快手 Sounds

Discovery
Why a dolphin鈥檚 dorsal fin is like a fingerprint
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Marine scientist Barbara Cheney explains why each dolphin鈥檚 dorsal fin is visually unique

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