We can respond to rising sea level by moving inland or by holding back the sea. People have been doing both for thousands of years, but the major physical impacts of a rise in sea level are erosion of beaches meaning a direct impact to tourism and as most of the US lives in coastal areas, that affects a lot of people. Inundation of deltas as well as flooding and loss of many marshes and wetlands increasing the salinity of coastal aquifers as a result of saltwater intrusion, and directly affecting the water you drink. The impacts of sea-level rise will occur in coastal areas that are continually evolving (see South Florida after Covid) and already face a wide range of natural and human-induced problems, including erosion, storms, land loss, wetland loss, and environmental degradation from development pressures. It’s bad that the seas rise because that will mean a lot of people will have to move to upper areas, but as that sounds far from happening, we already see immediate effects RIGHT NOW, such as insurance companies leaving markets as south Florida as those became too risky for them.