Nothing NSFW

Be kind to others

You may only upload images hosted on imgur, flickr, or wikimedia commons, or from educational websites (.edu) or government websites (.gov)

Include the location, if possible. If you don't know the location, please put "Location Unknown" in the title. (If you or another Redditor later identify the location, it can be posted in the comments.)

Include the resolution in brackets

If you were the one who took the picture, you may put an [OC] in the title. (Don't do this if you didn't actually take the picture!)

Videos and animated gifs are not allowed; still images only.

Submit only images of coral reefs; other types of images can go elsewhere. (Reef fish are an appropriate exception to this rule, as they can often be regarded as "just part of the scenery." If you're not sure, feel free to ask!) Check out r/EarthPorn. Even if your image doesn't fit there, they do have links to other places it might.