Clathrus crispus is a stinkhorn, and flies spread the spores. This beautiful little wiffleball mimic has a layer of dark, olive-brown slimy spores (called a gleba) on its inner surface. Flies enter, and fly away with spores. Really cute, but a bit stinky.
The appear after heavy rains, and begin to deteriorate within hours.
This species also occurs in the temperate Gulf Coast area from Florida to Louisiana.