Kelp are giant algae that supports diverse ecosystems. Kelp forests are an extremely productive ecosystem that provides shelter, food to many organisms, and habitat. Invertebrates, fish, and mammals are connected to the kelp species. These animals use the kelp as a shelter from prey and feeding areas. If the abundance of the kelp forest changes it will also affect the amount of fish. Overfishing has led to an increase in sea urchins, which led to a deterioration of kelp forests. Other aspects that affect the kelp forest are diseases, harvesting for kelp, and pollution. When the top of the food chain is removed such as a starfish, barnacles and snails begin to rise. A lot of these animals are herbivores, which also eat kelp. With this in mind