Why Do Mudflats Smell

Mudflats can be seen only when the seawater drains out of the estuary at low tide. Mudflats smell like rotten eggs when a smelly gas called hydrogen sulfide is let off by tiny living things called microbes living in it.

What are mudflats made of?

Mudflats form when silt and mud are brought in by seas, oceans, and tributaries. The mud and the silt are deposited into bays and lagoons when the tide comes in. The water mixes with the mud and silt, creating the muddy quicksand that occurs in mudflats.

Why are there so many mudflats in Korea?

The mudflat (called “beol” or “gaetbeol” in Korean) is a flat geological feature that results from the prolonged accumulation of sand or clay carried by tidal currents from the ocean seabed. It is hidden underwater during high tides and revealed during low tides.