"Since the island was settled, Nantucketers have been grappling with coastal hazards which, in many ways, are an accepted part of island life. Formed after the retreat of the , most of the island is composed of glacial outwash materials, including sand and , which are especially prone to erosion ... Over time, Nantucketers have adapted to coastal hazards by moving lighthouses, homes, roads, utilities, and other structures away from the coastline in both managed (i.e., planned) and emergency situations. However, with climate change, coastal storms are increasing in frequency and intensity and erosion of the island’s bluffs, dunes, and beaches is becoming more rapid with sea level rise, bringing impacts to Nantucketers’ front doors and threatening their homes, infrastructure, and natural resources."