Tidal Dynamics in the Bijagós Archipelago, Guinea-Bissau
NASA
- The Bijagós Archipelago in Guinea-Bissau undergoes dramatic landscape changes twice daily due to powerful tidal cycles.
- Consisting of 88 islands and islets, the region features a complex network of sandy channels, mudflats, and mangrove forests that expand and contract significantly as tides ebb and flow.
Tidal Processes
- During low tide, vast intertidal mudflats and sandflats emerge from the sea, causing the physical footprint of the islands to grow substantially.
- This process reverses during high tide, with the visible landmass shrinking as the water rises again.
Imaging Details
- The featured visual data was captured on November 28, 2025.
- Image credit: NASA/Lauren Dauphin, USGS
- Text credit: Adam Voiland