While there is a wide range of negative effects expected in the future due to ocean acidification, there are some cases that have much more potential fallout than others. One of these cases is plankton. Plankton plays a crucial role in food webs, and therefore any damage done to plankton species will have a ripple effect that spreads throughout the ecosystem. A prime example of plankton that is at risk due to ocean acidification is the pteropod. While much uncertainty remains regarding the severity of future damage to pteropods, the prospect of a losing a key part of the food web is frightening. The ocean’s changing chemistry will inhibit pteropods’ ability to grow and survive, subsequently creating imbalance (decreasing biodiversity) among the various plankton species and creating problems further up the food chain.