Have you ever been in the bath and you felt something creeping up your feet then you look down to see what it is and you see an earthworm? Aha! I know that feeling especially when the soap makes contact with your eyes at that point when you’re trying to see what’s creeping on your feet. LMAO. Immediately what comes to your mind is salt, Right? Yes, salt is what comes to our mind to sprinkle on it.
Also when it’s rainy, we will go outside to look for these worms to sprinkle salt on them not just to kill them but to watch them suffocate. I know most of us did this for fun when we were young.
But what happens to their body that makes them to shake like that when salt is sprinkled on them.
The skin of these Earthworms is moist at all times due to mucus secretions from it’s skin. It is through this moist skin that they respirates for survival because they don’t have respiratory organ.
Now when they respirates, the oxygen dissolves on the mucus and is carried by the circulatory system to the cells which makes it important for their skin to be moist at all time or else they will die of suffocation and that is what happens when you sprinkle salt on them. The salt makes the skin dry and hence there’s no moisture left for respiration and it dies of suffocation.
Now, you see why it behaves the way it does before suffocating and also you have inflicted pain on an innocent specie of a living thing which never meant harm.
You can Google on it to know more about them.