The World's Strangest Animals that Scientists are still Struggling to Explain

2. The Mola-Mola, also called the ocean sunfish, can weigh up to 5,000 pounds and grow to be 14 feet — and we don’t mean in length. It’s weirdly tall, which helps give it the distinction of the largest bony fish in the sea. 

3. Male birds will go to the most unique lengths to impress a female. In a split second, the Vogelkop Superb Bird-Of-Paradise lifts a cape of black feathers over its head and dances, hoping to entice a female into mating with him.

4. Imagine seeing these glowing red eyes in the dead of night! The Aye-Aye primate definitely looks strange, and its opposable big toes and spindly fingers don’t help. It’s even considered to be “bad luck” in some cultures.

5. The Japanese Spider Crab is just as horrifying as you imagined: Hard-shelled body the size of a cat? Check. Covered in sharp edges? Check. Monster legs that span 12 feet? CHECK. Believe it or not, they’re considered a delicacy in Japan!

6. The Pink Fairy Armadillo is just as cute as it sounds, depending on who you ask. This creature is great at hiding, and the fact that it’s only 5 inches long means it spends a majority of its life underground.

7. The Purple Frog is large and gelatinous, so you’d think people would leave it alone — alas, the amphibian is endangered. Some turn it into an amulet for kids who are afraid of storms, and its tadpoles are often used for spices and medicines.

8. The ocean really is like another world, and the Blue Dragon, AKA sea slug, looks like it hails from Neptune. The way this 3-centimeter creature survives is by nibbling on deadly man-of-war jellyfish and stealing their stingers for protection!

9. If you catch the Axolotl at the right angle, it looks like it’s smiling! Its youthful appearance gives it this friendly demeanor, since this salamander never really loses the gills, tail, and lifestyle habits of its childhood days. 

10. The “casque” on the Helmeted Hornbill’s head makes it look super weird, and it’s actually the reason the bird is dying out. About 6,000 were killed in one year in China because the “casques,” which are turned into art, were in such high demand.