These isolated waters hold a zoological surprise: Algae, fertilized by camel droppings, are eaten by fish that are preyed upon by a group of crocodiles.

• 从动物学角度上来说，这些零星的水塘令人非常惊讶：骆驼的排泄物滋养了水藻，水里的鱼吃掉水藻，鳄鱼群又以捕鱼为生。