English: The atoll of Nukuoro, a polynesian exclave in the Federated States of Micronesia. The image shows the sandy atoll with 42 distinct patches of vegetation. These patches are located on the northeast and east portions of the atoll that face the dominant easterly winds. The detailed image (white box indicates area shown) shows the larger fields and settlements, which are on the inland side of the largest forest patch, protected from the wind. The land surface is probably slightly higher above sea level here because dunes build up preferentially on wind-facing slopes where beach sand is mobilized by wind. Swells driven by these winds approach from the east-southeast (right) and wrap around the atoll to produce an interference pattern on the downwind side. Water in the lagoon is notably calm in comparison. Coral heads appear in the lagoon, including one in the center of the image.