In December 2004, an earthquake off the coast of Sumatra triggered a devastating tsunami that impacted several Indian Ocean countries, including Indonesia, Thailand, Sri Lanka, India, and the Maldives. The first three images, acquired by the Envisat ASAR satellite between December 30, 2004, and January 3, 2005, depict the Andaman Islands. The fourth image shows Little Andaman Island, while the fifth captures North Sentinel Island; both are Envisat ASAR images in Multitemporal mode. In these images, newly emerged reefs or coastlines are visible in blue along the coastlines. The blue zones inside the coastline on the Little Andaman image indicate areas affected by the tsunami. The sixth image, captured by Envisat MERIS in Full Resolution multitemporal mode, focuses on the Andaman Island.

• Image 1: Satellite: Envisat, Instrument: Advanced Synthetic Aperture Radar (ASAR), Acquisition Date: 30 December 2004, Orbit number: 14816
• Image 2: Satellite: Envisat, Instrument: Advanced Synthetic Aperture Radar (ASAR), Acquisition Date: 31 December 2004, Orbit number: 14838
• Image 3: Satellite: Envisat, Instrument: Advanced Synthetic Aperture Radar (ASAR), Acquisition Date: 03 January 2005, Orbit number: 14881
• Image 4: Satellite: Envisat, Instrument: Advanced Synthetic Aperture Radar (ASAR), Acquisition Date: 30 December 2004, Orbit number: 14816
• Image 5: Satellite: Envisat, Instrument: Advanced Synthetic Aperture Radar (ASAR), Acquisition Date: 03 June 2004, Orbit number: 11810
• Image 6: Satellite: Envisat, Instrument: Medium Resolution Imaging Spectrometre (MERIS), Instrument features: Resolution image (300 m), Acquisition Date: 14 - 27 December 2004, Orbit number: 14881