Diamondback terrapins live in estuarine habitats such as salt marshes, creeks, and tidal flats along the Atlantic and Gulf coasts of the United States. Crab traps pose a significant threat to the population as large numbers of individuals can become stuck and drown. Additionally, predators and humans regularly destroy the eggs that exist in nests along the shore. Levy has formulated an agent-based model which uses data from a mark-recapture study to assess the impact of crab traps and nest disturbances on the longevity of a localized population.