Visualising the fetch

When teaching about coastal processes, we often need to explain what we mean by fetch: the distance of open water over which the wind can blow to create waves. This is a potential distance, which reflects the opportunities for waves to grow larger.

This ESRI web map by Ben Flanagan visualises the nearest land which can be reached from the UK, when travelling in all directions from the coastline.
It's also another good use of GIS to remind students of the value of this tool...