The primary impact of climate change on coastal ecosystems is the rise in sea levels, which leads to habitat loss, increased salinity, and altered coastal dynamics. Coastal habitats like marshes and mangroves are particularly vulnerable, as rising waters can inundate these areas, affecting biodiversity and ecosystem services. Additionally, climate change may exacerbate ocean acidification and alter species distribution patterns, impacting fishing industries and local communities. Addressing these changes is vital to protecting coastal ecosystems and their functions in the face of ongoing climate challenges.