With over 72% of the Earth’s surface covered by salt water, the Earth’s oceans are home to 230,000 known species. And that’s with only 5% of the Earth’s oceans considered explored! In celebration of the vast unknown of the ocean, we present our favorite ocean animal facts:

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Share it: Email And if you liked this post, be sure to check out these popular posts: 28 Interesting Shark Facts That Reveal The Ocean's Most Dominant Predator 25 Amazing Rainforest Facts You've Never Heard 77 Amazing Facts That Will Make You The Most Interesting Person In The Room 1 of 11 Jellyfish have been around for more than 650 million years, which means that they outdate both dinosaurs and sharks. 2 of 11 An Electric Eel is known to produce electricity sufficient enough to light up to 10 electric bulbs. 3 of 11 Dolphins sleep with only half of their brain and with one eye open so they can watch for predators and other threats. 4 of 11 An Octopus has three hearts and the color of its blood is blue. 5 of 11 At 188 decibels, the calls of blue whales is the loudest sound made by any animal on the planet. 6 of 11 Oysters can change from one gender to another and back again depending on which is best for mating. 7 of 11 Seahorses are the only animals in which the male, not the female, gives birth and care for their young. 8 of 11 A shrimp's heart is in their head. 9 of 11 Sea sponges have no head, mouth, eyes, feelers, bones, heart, lungs, or brain, yet they are alive. 10 of 11 Turtles live on every continent except Antarctica. 11 of 11 Like this gallery?

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If you enjoyed these amazing facts about ocean animals, be sure to check out our other posts on interesting facts about the world and our collection of amazing facts!