Ten Amazing Facts About Ocean Animals

Published January 18, 2013
Updated February 1, 2024

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:

Jellyfish Facts
Jellyfish have been around for more than 650 million years, which means that they outdate both dinosaurs and sharks.

Ocean Animal Facts About Electric Eels
An Electric Eel is known to produce electricity sufficient enough to light up to 10 electric bulbs.

Amazing Facts About Ocean Animals Dolphin Sleep
Dolphins sleep with only half of their brain and with one eye open so they can watch for predators and other threats.

Octopus Hearts
An Octopus has three hearts and the color of its blood is blue.

Facts About Blue Whales
At 188 decibels, the calls of blue whales is the loudest sound made by any animal on the planet.

The Gender Of Oysters
Oysters can change from one gender to another and back again depending on which is best for mating.

Seahorses are the only animals in which the male, not the female, gives birth and care for their young.

Location Of A Shrimps Heart
A shrimp's heart is in their head.

Facts About Sponges
Sea sponges have no head, mouth, eyes, feelers, bones, heart, lungs, or brain, yet they are alive.

Facts About Ocean Animals
Turtles live on every continent except Antarctica.

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!

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