Historical and projected global mean sea-level rise
The world’s oceans are rising, threatening coastal communities with more frequent and extreme flooding. This chart shows the past and projected sea-level rise under six scenarios. The lowest scenario is what would be expected if the rate of sea-level rise stays the same as over the last 25 years. The most extreme scenario — a sea-level rise of about 8 feet — assumes a rapid mass loss from the Antarctic ice sheet.