EPISODE · May 27, 2026 · 20 MIN
2026 biology talkshow:海洋哺乳動物的毛髮演化史
from 雷比特生物空中講 · host 雷比特老師
探討海洋哺乳動物毛髮的演化歷程，說明毛髮如何從陸地祖先的保暖功能轉型為適應水下環境的工具。大多數鯨豚為了降低水中阻力並提升游速，選擇在成年前脫去毛髮，並改以厚實的鯨脂來維持體溫。然而，特定物種如大翅鯨與亞馬遜河豚，則將殘留的毛髮轉化為敏銳的感知雷達，用以偵測水流與獵物。海牛目動物更為獨特，其全身佈滿了數千根具備感應能力的觸毛，使其在混濁水域中能精準導航。總結來說，這些物種並非單純失去毛髮，而是透過演化將其改造為精密的高科技感測系統。 聽完後可以自主進行線上測驗，檢視學習成效喔~(需要登入gemini) 測驗網址 https://gemini.google.com/share/e06642e0575d Powered by Firstory Hosting
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2026 biology talkshow:海洋哺乳動物的毛髮演化史
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