Tetraodontidae
These mysterious circles on the seafloor are not caused by aliens—it's actually pufferfish hoping to snag a new mate. Divers first noticed the structures near Japan's Amami-Oshima Island about 20 years ago. Nobody knew what was creating them until recently when scientists discovered that male pufferfish spend about 10 days carefully constructing and decorating the structures to woo females.
Desert Bloom
A desert bloom is a climatic phenomenon that occurs in desert across the globe, in which a wide variety of flowers blossom during early-to-mid-spring in years when rainfall is unusually high. The blossoming is caused when rain reaches seeds or bulbs that have been dormant, causing them to germinate and flower.