"There are submarine volcanoes in Alaska, like the emergent volcano Bogoslof, but those are located in areas of known volcanism, unlike the feature reported by the Healy," he added.

Vents on Bogoslof Island continue to spew mud, steam and sulfurous gases two years after an eruption sent ash clouds into the path of jetliners passing over the Bering Sea.

Or, occasionally our satellites return images that simply look so unique that we find the time to cover them. The plume recently ejected from Alaska’s Bogoslof Volcano was noteworthy for both reasons.