The Bijagós Archipelago, located off the coast of Guinea-Bissau, serves as a unique ecological landscape defined by its constant interaction with the Atlantic Ocean. Comprising 88 islands and islets, the region is characterized by complex sandy channels, vast mudflats, and expansive mangrove forests. These features are subject to the powerful influence of twice-daily tidal cycles that reshape the local geography in real-time.

According to NASA News Releases, high-resolution satellite imagery captured in late November 2025 illustrates the sheer scale of these tidal shifts. As the tides recede, substantial portions of intertidal mudflats and sandflats are exposed, creating the visual effect of the islands expanding significantly. Conversely, as the tide returns to its high point, the landmasses appear to shrink, submerging the flats back into the sea. This rhythmic cycle highlights the transient nature of the West African coastline and underscores the importance of monitoring such habitats via remote sensing technology to better understand environmental changes in coastal ecosystems.