travel · FOLLOW YOUR CURIOSITY
How much coastline can you hide in a single line?
Zoom in. The little bends were there all along.
Explore the interactive discovery →
Look closer at the edge
Zoom into this schematic coastline.
Far away
Small bends blend into the outline.
Closer
More inlets become visible.
Close up
Fine details fill the view.
Invented schematic coastline with finite detail. Zoom reveals existing detail; this is not a distance measurement.
What you just noticed
A coastline’s representation depends on scale and resolution. A measurement also needs a definition of the shoreline and a method: changing these can change the reported length.
Keep the distinction
See what happens
A coastline number needs a measurement method, not just a map.
More inlets become visible.
AN IDEA TO TAKE WITH YOU
A coastline number needs a measurement method, not just a map.
Follow a connection
Rock, plant… or a whole neighbourhood of animals? →
Who builds some of the structures along tropical coasts?
Sources and transparency
NOAA · How long is the U.S. shoreline?
Accessed: 2026-10-28
NOAA · Medium resolution shoreline
Accessed: 2026-10-28
Prepared with AI assistance. Illustrations are explanatory, not evidence. You can report an issue in the interactive discovery.