NOAA Photo Collection, K-12

http://www.photolib.noaa.gov/index.html
The copyright-free photographs from the National Oceanic and Atmospheric Administration are meant to be used in student presentations and reports. All images are keyword searchable. It includes 22 topic areas such as: coastlines, coral kingdom, fisheries, flying, space, sailing, weather, etc. Create classroom posters from the images, link photos to your class wiki, add images to the online class in Moodle, display the “image of the day” to start classroom discussions. To download an image, click on High Resolution Photo below the image caption then save it.