We touched on this earlier on, but there's a big difference between looking at an image of a melting iceberg and looking at an image of the sea encroaching upon an island. Melting ice leads to rising sea levels. That's just basic science. People and places which lay at the center of land masses aren't at risk but spare a thought for those who are. People who live on low-lying islands, for example.
Island nations and their peoples will be the first victims of rising sea levels. The effect won't be instant, so we should be able to evacuate people before a disaster happens, but their homelands will be gone forever, lost below the waves. After that, it will be coastal towns at the sea's edge. Centuries of human culture and history will be washed away because we didn't take action to stop it from happening. Right now, we still have that chance. Soon, we won't.