Unlike the skin of whales and manatees, shark skin doesn't pick up algae or barnacles. This seems to be due to little scales called "dermal denticles."
与鲸类和海牛这些海生哺乳动物不同,鲨鱼的皮肤不会附生海藻或藤壶,这可能要归结于其皮肤上被称之为“肤齿”的微小鳞屑。
Manatees (also called sea-cows) actually look like giant underwater slugs.
实际上海牛看上去像巨型的水下鼻涕虫。
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