As sea levels rise due to climate change, the coastline is eroding at an alarming rate, threatening coastal communities and infrastructure. Rising temperatures cause ocean waters to expand, glaciers and ice sheets to melt, and thermal expansion to occur, leading to increased water volume. Consequently, vulnerable coastlines are battered by stronger waves, storm surges, and flooding, gradually swallowing up the land. Protective measures such as seawalls and beach nourishment can temporarily mitigate the issue, but long-term solutions require addressing the root cause of climate change and implementing adaptation strategies to protect coastal populations and ecosystems from the relentless advance of the sea.