Holding back the Sea

• Geography
• Primary Education
• Age 11

The result is often devastating

Nearing the coast...

• The wave approaches the coastline at high speed
• It is slowed down by the shallower coastal water
• Because of that, the wave builds up vertically
• Waves can reach heights of 10-15 meters above normal levels
• It can pass sea defences (like dikes) easily and crashes down on the areas lying beyond the sea defences

What is sea defense?

Types of Sea Defenses