What is the biggest problem with desalination?

Desalination: to remove salt from seawater

The biggest problem occurs in the species living in that habitat. Some species of fish survive better in salt water than in fresh water. Just about every species of fish you`ve seen in a tank need salt water to absorb. Removing salt from a natural environment will decrease those fish`s population.

In some aquariums, leaving salt in the aquariums is proven to prevent disease from the fish. It helps to clear the build up that living in fresh water can cause.

a bird that nests only in a particular tree species.