Wait... are we still on planet Earth? There are some life forms that just don't seem like they originated here (cue the creepy Theramin music)... maybe they didn't.
Explore Alan Cressler's photos on Flickr. Alan Cressler has uploaded 31302 photos to Flickr.
Explore this photo album by Stefano Vianello on Flickr!
Nature reveals the doorways to those whose hearts are open.
Urnula craterium is a species of cup fungus in the family Sarcosomataceae.
Explore José Delamano García's photos on Flickr. José Delamano García has uploaded 316 photos to Flickr.