The Massapequa preserve is an environment full of biodiversity. Biodiversity is the variety of different species in an ecosystem. Biodiversity is a very important factor in almost every ecosystem in the world. Lowering levels of biodiversity can affect the overall integrity and health of the Massapequa Preserve freshwater creak.. Without biodiversity ecosystems would quickly collapse. If an ecosystem contains a higher rate of biodiversity then it is more stable and will have more defence against changes in the outside environment. This experiment was done to dive deeper into the status of the ecosystem and the level of biodiversity of the Massapequa Public Preserve's fresh water creeks. Invertebrate samples were collected from massapequa preserve during early fall. Safety equipment such as waders and gloves were used. Using nets to search through the water, specifically near shallow water and natural debris, invertebrate samples were caught and recorded. Lastly the invertebrates were D