托福口语 Task 4

Today we're going to talk about a fascinating behavioral adaptation in animals called 'mimicry'. Mimicry is when one species evolves to look or behave like another species, often to gain a survival advantage. There are two main types: protective mimicry and aggressive mimicry. In protective mimicry, a harmless species imitates a dangerous one to avoid predators. For example, the scarlet king snake has red, yellow, and black bands, very similar to the venomous coral snake. Predators, having learned to avoid the coral snake's bright colors, also avoid the harmless king snake, giving it protection. In aggressive mimicry, a predator imitates a harmless or attractive species to lure its prey. Consider the anglerfish, which lives in the deep ocean. It has a fleshy appendage that glows and wiggles like a small fish. When curious prey approaches to investigate this 'bait', the anglerfish quickly snaps it up. So, whether for defense or offense, mimicry is a powerful tool that shows how evolution tailors species to their environments.