PREY DEFENSES

Last week, the class covered organisms' ways to protect themselves which was about prey defenses. A lot of preys have their own way to protect themselves from eaten by other organisms as known as the predators.
There are a lot interesting examples on our Earth. Some animals use protect color to trick their predators, such as hare live under danger, their hairs' color turned to khaki which is the color in forest during autumn. Of course, some chameleon species are able to change their skin colors. Different chameleon species are able to change different colors which can include pink, blue, red, orange, green, black, brown, yellow and turquoise. The most common example of self-defense is turtle. It ducks inside it's shell and stays till the danger is gone. Some turtles also squirt out a foul-smelling fluid to deter a predator. That perfectly saves their life for many times! Geckos, are also good at protecting themselves, when they are in danger, or caught by their natural enemy or human, they would cut their tails immediately so they have chance to run away. Yesterday during dinner, I heard that holothuroidea protect themselves by expelling their sticky covariant tubules to entangle predators; and by secreting a poisonous soap-like substance called holothurin into the surrounding water. That is a lot different from other animals. The animals live in desert, their skin and hairs always turn into the color of desert to have a safer life.