< >
Caimans are threatened by water pollution, such as plastic, and other pollutants that toxify water. Caimans and crocodiles can breathe underwater without inhaling any water. But, they could inhale small, harmful particles that are a result of pollution. Having a membrane filter will make it so only select necessary particles can get into the body. The membrane will be structured like a typical cell membrane, but uses signal proteins to let the body know if something harmful is trying to get inside. If it is an invader, the body or signal proteins will release it. Select particles can go in and out without any repercussions, such as oxygen, and carbon dioxide. This adaptation will make sure the caiman doesn’t inhale any toxic materials.