 Pteropods are severely affected because increasing acidification levels have steadily decreased the amount of water supersaturated with carbonate which is needed for the aragonite creation.When the shell of a pteropod was immersed in water with a pH level the ocean is projected to reach by the year 2100, the shell almost completely dissolved within six weeks.Likewise corals, coralline algae, coccolithophores, foraminifera, as well as shellfish generally, all experience reduced calcification or enhanced dissolution as an effect of ocean acidification.