Answer:
none
Explanation:
All of the creatures have two eyes and since there are 24 eyes there must be 12 creatures. Octopuses don't have tails so there are 8 fish and mermaids.
Essentially ingesting too much salt can cause the salt to absorb the water in your body and this can make you dehydrated and lose water you need.
Introducing a predator means there will be less prey which will help balance the population of prey. Some predators may run out of food and there might be no prey left for them. If the prey were removed the predator population would decline.