11. These underwater formations are made by the male pufferfish as a way to attract a potential mate.

Image Credit: Conscious Life News
12. On Christmas Island (off the coast of Australia), the red crab migrations is when thousands of the crustaceans head to the beach for mating season.

Image Credit: Thousand Wonders
13. Catumbo lightning in Venezuela that occurs up to 10 hours a day almost 260 days a year!

Image Credit: Neat Nature
14. This is a natural gas field that collapsed into a cavern and set on fire in Turkmenistan.

Image Credit: Wikipedia / flydime
15. These beautiful bubbles will explode if punctured quickly! There is natural gas trapped inside.

Image Credit: Reddit / mind_virus