There are millions of different animal species on Earth and science only knows about a small percentage of them (although that's still quite a lot). There are also a lot of extinct species, some of which died out recently and others that have been dead long before humans existed. But what about the animals who predate us and are still here? What are the oldest animals on Earth that still exist today? We'll tell you about the 12 oldest, as long as you're willing to travel under the sea to meet them.
12. GOBLIN SHARK - 118 million years old
Goblin sharks are among the most terrifying creatures to behold, and for that reason, we're glad they dwell at the bottom of the ocean and rarely stray from there. That's why humans have so infrequently laid eyes on these beasts, even though they've been on Earth for as long as we have and much longer. A live goblin shark was caught in Japan in January 2007, but it died within days. Still, scientists were able to examine the specimen and learn much about this rarely encountered living fossil. (National Geographic)
Image via REUTERS/Tokyo Sea Life Park/Handout