The Djulai River (thin, dark line) is the border between West (Barat) Kalimantan (area northwest of river) and Central (Tengah) Kalimantan along the southwest coast of this Indonesian Island. The Djulai River empties into the Java Sea just east of a small peninsula (bottom center). The Airhtam River (more difficult to identify) is also visible as it empties into Airhtam Bay, west of the small peninsula. The longshore current is transporting a band of sediment (lighter-colored water) westward into Airhtam Bay. While most of the landscape is low-lying swampy wetlands, the darker areas show stands of tropical rainforests. The only evidence of development in this remote region of West Kalimantan is in areas (lighter color) where the dense forest cover has been removed.