The blue-green waters along the coastline of Kimberley, in northwestern Australia, are constantly in flux due to large tidal currents that stir up sediment and create colorful patterns. The region has one of the largest tidal ranges in Australia and the world, reaching up to 11 meters. The area is known for its least human-impacted coastal zones and supports diverse marine habitats including mangroves, seagrass beds, and coral reefs. Phytoplankton, the foundation of the marine food web, may contribute to the colorful water. Climate change may reduce phytoplankton productivity globally, but certain types are thriving along the Kimberley coast. Sediment core studies have shown a 150 to 300 percent increase in diatoms and dinoflagellates since the 1950s, possibly due to increased rainfall and cyclone activity. The image was acquired by the Operational Land Imager on Landsat 8. [b79fcc56]