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- [해양 > 북방극지연구실]2016-12-14 17:36:38/ 조회수 61635
- □ 북극의 유니콘이라 불리는 일각고래(외뿔고래)에 대한 소식입니다. 유니콘처럼 긴뿔은 사실은 뿔이 아니라 치아라는 사실이 매우 놀랍습니다.
- □ 북극의 유니콘이라 불리는 일각고래(외뿔고래)에 대한 소식입니다. 유니콘처럼 긴뿔은 사실은 뿔이 아니라 치아라는 사실이 매우 놀랍습니다.
○ 최근 일각고래의 호흡에 관한 연구결과가 화제가 되고 있는데, 일각고래는 두 개의 치아가 있는 고래로 수컷의 치아 하나가 뿔처럼 매우 길게 발달한 북극의 놀라운 창조물이라고 합니다. 플러스 원(PLOS one) 저널에 따르면, 일각고래는 소리로 주변을 탐지하는 등 소리 감지 능력이 매우 특별하며, 극한의 북극에서 일생을 보내며 주로 어둡고 얼음이 많은 캐나다 동부와 그린란드에 서식하고 있다고 합니다.
더욱 흥미로운 사실은 수컷과 뿔이 없는 암컷은 같은 초음파(echolocators)를 가지고 있으며, 뿔(Tusk)은 암수를 구분하는 표시일 뿐 송수신을 위한 안테나(antenna) 기능은 없다고 합니다.
북극의 비밀은 알면 알수록 매우 신비롭습니다.
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