Urgent action is needed to save the UK's coastline from rising sea levels, the National Trust has warned.
It's feared that sea levels could increase by nearly a metre in the next 75 years, threatening 378 miles - or 60% - of the UK's coastline.
Rising sea levels are caused by the planet getting warmer because of greenhouse gas emissions, causing water to swell and polar ice to melt.
The trust has called for more coastal protection and cuts in gas emissions.
A trust spokesman said: "Over the next few decades, extensive coastal change - especially flooding and erosion caused by sea level rise and more frequent storms - appears inevitable."
Vulnerable
The trust cares for 10% of the coastline of England, Wales and Northern Ireland.
It highlighted Golden Cap in Dorset and Formby Sands in Lancashire as among the most vulnerable sites.