Sharks eating polar bears. Cannibalistic crabs. Gigantic sea turtles. Sometimes, the natural world is so amazing, it even shocks the scientists and researchers who study it every day.

That was on full display this week on Twitter, where conservation biologist Dr. David Shiffman called on his fellow scientists to share their favorite "wow" facts using the hashtag #WowScienceFact. The result? A whole lot of interesting facts about nature, marine animals and more. At Scuba Diving, we can't get enough fun facts about marine life and the ocean, so we compiled our favorite ocean-centric facts from this forum on Twitter.

Check out the eye-opening tidbits below, and follow Shfifman on Twitter or read some of his work here.

Interesting Facts that Have Scientists Saying "Wow"