Adaptation in living organisms

Follow the instructions below and address the following prompt:
Tell us about your favorite example of an adaptation in living organisms. It can be an example in any species or group of species, and it can be in animals, plants, fungi, or bacteria. If you don’t have one, pick your favorite group of organisms (e.g. sea turtles) or a particular species (e.g. Loggerhead sea turtle) and do a little research.

Specify 1) what is the adaptation 2) how it specifically confers fitness and 3) what components of the environment provided selection pressure. Make sure your answer is thorough and your argument is clear.

Points will be awarded based on whether the trait chosen was an adaptation or not, and the clarity/thoroughness of your argument