15 Crazy Animals Of The Polar Regions That Couldn't Exist Anywhere Else

Voting Rules
Vote up the weirdest animals you didn't know were chillin' at the poles.

If you paid attention in school, you most likely know some of the animals that live in the Arctic. There are birds, seals, and of course, polar bears. But what about hairy crabs, horned whales, and creepy crawly bugs that also call the Arctic Circle home?

And then there are the critters that inhabit Antarctica. It may be on the other side of the world, but it also features extreme climate conditions and some crazy animals.

Just like wild creatures found in Florida or any other region, Antarctic and Arctic species are pretty varied. While some animals may also have relatives in other parts of the world, polar animals have adapted many physical abilities that allow them to thrive in their extreme environments. From being able to control their own heartbeats and metabolism to creating a body fluid that acts like antifreeze, scary animals in the Arctic and Antarctic are also pretty amazing.

So what weird and creepy animals of the Arctic and Antarctic have you possibly missed learning about? You'll have to read on to find out.

  • 1
    706 VOTES

    Eulagisca Gigantea

    Eulagisca Gigantea
    Photo: Siobhan Leachman / Wikimedia Commons / CC0 1.0

    This crazy looking marine creature could only survive in two places: your worst nightmare and the Antarctic Ocean. Luckily it's confined to the ocean for now. It also goes by the descriptive title of "bristle worm."

    The worm's fringe might seem bizarre, but its bristles help the creature crawl along the ocean floor, swim, and sometimes even defend itself against predators. Because it has sharp teeth, researchers believe the worm is a carnivore, and that it can possibly extend its jaws to catch its prey. To make things even weirder, the part that looks like its head is actually its throat.

    706 votes
  • 2
    569 VOTES

    Ice Worm

    Ice worms are related to leeches and earthworms, and these creepy crawlers are well adapted to life in the cold. They are able to regulate their body temperature so their insides don't freeze. They burrow deep into the surfaces of glaciers and tend to hide there during the day, since they run the risk of dying in warmer temperatures.

    If you've ever tried walking on ice, you know it's quite easy to slip. Ice worms, however, transport themselves across and through glaciers by using small bristles on the outside of their bodies to grip the ice and give themselves some traction. And they're pretty good at it too, traveling up to 10 feet per hour across icy surfaces.

    569 votes
  • 3
    510 VOTES


    Photo: NOAA's Pacific Marine Environmental Laboratory / Wikimedia Commons / Public Domain

    Snailfish are named for their loose, gelatinous skin that takes the place of scales. At the bottom of their tadpole-shaped bodies are giant suckers, which they use to attach themselves to rocks or other objects on the ocean floor. There are about 335 species worldwide, 20 of which make their home in Arctic waters.

    They may be somewhat comical, but they have a unique ability: they can live in the deepest parts of the sea, including the Mariana Trench.

    510 votes
  • 4
    509 VOTES


    Photo: Uwe kils / Wikimedia Commons / CC BY-SA 3.0

    Icefish are literally some of the coldest-blooded creatures you'll find in the ocean. They'd have to be, if they wanted to survive in the Arctic. Icefish have developed several special features that allow them to thrive in icy waters. Their body temperature is able to adapt to the temperature of the water, and remains very cold. In fact, if they were to encounter higher temperature waters, they would actually die.

    Icefish also create glycoproteins, which act as a sort of antifreeze to keep ice crystals from forming on their bodies. But the most unusual thing about these fish is that they lack hemoglobin. The blood of an icefish is white in color, and that, combined with their transparent bodies, allows them to camouflage themselves.

    509 votes
  • 5
    436 VOTES

    Sea Spider

    Sea Spider
    Photo: NOAA/Monterey Bay Aquarium Research Institute / Wikimedia Commons / Public Domain

    If spiders creep you out, have no fear. Sea spiders aren't actually spiders and can only be found at the bottom of the ocean. However, for reasons unknown, these arthropods can grow to crazy sizes in locations around the Earth's poles; some have a leg span of up to 10 inches.

    They appear to be all legs, and with very little body, they have no need for a respiratory system. While true spiders have eight legs, some of these spiders can have up to 12. They are considered carnivores and dine on sponges, jellyfish, and worms by using a large proboscis to literally suck the life out of their prey like a mosquito.

    436 votes
  • 6
    458 VOTES
    Photo: Schokraie E, Warnken U, Hotz-Wagenblatt A, Grohme MA, Hengherr S / Wikimedia Commons / CC BY 2.5

    Tardigrades are one of the most unusual organisms found in Antarctica. They are also known as "water bears" for their plump bodies and clawed limbs, and are thought to be one of the tiniest creatures found on Earth. But anything that can survive in Antarctica shouldn't be judged by its size. In addition to being one of the smallest animals on the planet, they are also one of the oldest.

    Tardigrades have the unique ability to remove all water from their bodies and replace it with a sugar, kind of like freeze-drying themselves in order to survive in harsh environments. They were even launched into space to test their tenacity. Most passed the test by surviving cosmic rays, normally deadly levels of UV radiation, and the vacuum of space with flying colors.

    458 votes