托福口语 Task 4

Today, we're going to talk about a fascinating adaptation in the animal kingdom: camouflage. Specifically, I want to discuss how some animals use camouflage not just to hide from predators, but also to hunt. This is called 'aggressive mimicry.' The main point is that camouflage can be a dual-purpose tool, enabling an animal to be both invisible and deadly. Let me give you two examples. First, consider the praying mantis. Some species, like the orchid mantis, have evolved to look exactly like a flower. They sit on plants, and when a bee or butterfly comes to collect nectar, thinking it's a real flower, the mantis strikes and captures it. The camouflage isn't just for hiding; it's an active hunting strategy. Second, think about the stonefish. This fish lives on the ocean floor and has a body that perfectly resembles a rock or coral. It remains motionless, and when small fish or shrimp swim by, unaware of the danger, the stonefish rapidly opens its mouth and sucks them in. In both cases, the animals use their appearance to lure prey close, demonstrating that camouflage can be as much about offense as about defense.