鯨魚遷徙為脫皮?

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最新一項研究表示鯨魚遷徙是為了脫皮。研究員花超過八年觀察62頭虎鯨,發現寒冷水域的食物資源比熱帶水域有更豐富,但停留寒冷水域久了會有一層矽藻積聚於虎鯨的表面。透過遷徙到熱帶水域,能助牠們脫皮除掉矽藻來保持健康。

a new study discovered whales migrate in order to shed their skins. Researchers spent over 8 years studying 62 orcas; there are actually more food resources in the cold waters for the orcas than in tropical areas. However, a layer of diatoms will be collected if the orcas stay in cold water for too long. By migrating to the tropical waters, orcas can shed their skins and remove the diatoms to maintain healthy skins.

https://www.mnn.com/earth-matters/animals/blogs/whales-migrate-skin



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