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Lists about some of the most beautiful, dangerous, and otherwordly creatures that thrive in our very own oceans.

Interesting

Jellyfish: What may seem like pests to the beach bums of the world are actually very interesting and fun subjects. Sometimes colorful and all the time slimy, jellyfish have a lot more going on than you might realize. They are fascinating and complex ocean creatures and this list of the most interesting jellyfish facts is here to help you realize this.&nbsp;For an animal that pre-dates the dinosaurs, it is surprising how little most of us know about them. Take a look at this list of the most interesting and random facts about jellyfish and get to know these beauties a little better. For example: they lack a heart, brain, and lungs. So how do they get by? Take a look at this list and see how these smart sea creatures survive and thrive with their strange abilities.Make sure you vote up the cool jellyfish facts you think are the most interesting and informative. Also don't forget that peeing on a jellyfish sting will do nothing but make for an awkward moment. Now go conquer the world with all this information about jellyfish!

Animals

What is the first thing that comes to your mind when you hear &quot;dolphin&quot;? Would you say Flipper? Or maybe you&#39;d go with SeaWorld? These are about the closest interactions most of us have had to these amazing marine mammals. But they are so much more than trick performing and problem solving beauties. With over 43 species of dolphins living in all parts of the world these creatures are full of surprises. Check out this list of the most fun dolphin facts and learn why these animals are kings and queens of the ocean.&nbsp;

This list of the most random dolphin facts will make you want to play with these sea creatures immediately. They are extremely smart and excellent communicators. Their list of unique traits goes on and on, no surprise as they&#39;re one of the smartest and most agile mammals in the world.

Did you know they communicate with clicks and even give themselves names? They also have 100 teeth and two stomachs, but swallow all their food whole. In addition, these animals are very similar to humans. Did you know that they even cry and can differentiate between sweet and sour? This is only the beginning in the long list of interesting dolphin facts.

Octopuses are extremely complicated, mysterious, talented creatures with a long list of hidden talents! These spineless but colorful sea-dwelling beasts have been around for ages keeping life in the ocean interesting. Check out this list of the most fun octopus facts and quickly see why these creatures reign supreme on the ocean floor.This list of random octopus facts will make you fear and admire the animals down below... if you ever see one. They are masters of defense with the ability to camouflage their entire bodies in mere seconds. In addition, they are extremely agile due to their lack of a skeleton, and they can even grow back arms they've lost! And let's not forget the way octopuses use ink to deter predators. That unique defense mechanism has fascinated humans for centuries! These interesting octopus facts are only the beginning on this list, full of fun information about octopuses.Take a look at all the facts below and vote up the coolest and most interesting octopus tidbits. And watch out for those arms - they are more than just suction cups!

Good Stuff

Otters. They were your favorite exhibit at the zoo, but maybe you grew up and forgot just how playful and adorable these little guys and gals really are. A member of the weasel family Mustedlidae, they are related to badgers, martens, ferrets, and even wolverines. Wolverines! Otters are just the cutest, and as it turns out, are quite interesting little animals as well. What are the most fascinating weasel facts?There are 13 species of otter, all of which are either aquatic or at least semi-aquatic. Some of them play basketball, some of them have numerous tricks to keep themselves from floating away, and all of them are cute beyond belief.Some of these adorable otter facts came from <a href="http://animals.io9.com/you-otter-know-its-sea-otter-awareness-week-1637795782/+katharinetrendacosta">here</a>, while others are courtesy of <a href="http://www.reddit.com/r/Awwducational">r/Awwducational</a>&nbsp;and <a href="http://www.reddit.com/r/Otters">r/Otters</a>. Get your fix of otter facts below and celebrate their craftiness, cuteness, and playful attitudes by voting on the list of otter facts below.

If the deep sea blobfish&nbsp;had a catchphrase, it would probably&nbsp;be &quot;womp, womp.&quot; This sad, squishy critter, dubbed the JELL-O of the sea, is one of the <a href="http://www.ranker.com/list/dumb-animal-pictures/ashley-reign">dumbest looking animals on Earth</a>.&nbsp;With the face of a cranky old man&nbsp;and a body that looks like a cross between Flubber and a mucus-covered fetus, the sad-looking blobfish&nbsp;is a <a href="http://www.ranker.com/list/sea-creatures-that-look-like-cartoons/cynthia-griffith">sea creature that looks like an ugly cartoon character</a>. We can't all be blessed,&nbsp;can we?Despite poor blobby's interesting looks, he's become sort of an icon -&nbsp;sparking Internet memes, plush toys, and even a blobfish-themed coffee shop. Blobby's got a lot going for him, and he's quite the celebrity of weird-looking fishes. Researchers don't know a whole lot about the blobfish, but they do know these chubby, floppy little guys shouldn't be overlooked because of their unsightly appearance. Blobfish are worthy of love, too. Here are some blobfish facts that prove this little guy is more than just a puddle of squish.

When you ask the average person to name their favorite type of animal, they seldom say “large marine crustaceans.” This is unfortunate, though,&nbsp;because lobsters are awesome and they aren’t getting the proper love and respect they deserve. Surely there are people out there other than <a href="http://www.imdb.com/title/tt3464902/">Colin Farrell</a> who can identify with the amazing lives of lobsters.There is a <a href="http://www.pressherald.com/2016/03/04/maine-fish-seafood-hit-record-616-5-million-in-2015/">multimillion dollar industry</a> centered around the harvesting of these bottom-dwellers, but most people couldn't name any facts about&nbsp;lobsters other than&nbsp;<a href="http://www.ranker.com/list/best-seafood/carly-kiel">they’re delicious</a>. That’s a shame, because awesome lobsters are so much more than an expensive entree. They can live for decades, grow to incredible sizes, and may even offer solutions for dealing with environmental pollution. Before you write them off as creepy <a href="http://www.ranker.com/list/what-sea-creature-do-you-want-to-be/amylindorff?ref=also_ranked&amp;pos=11&amp;a=0&amp;ltype=n&amp;l=2413067&amp;g=1">creatures of the sea</a>, consider there may be some things you never knew about lobsters that could completely change your perspective.

Imagine&nbsp;a 100-foot-long sea flower that can detach itself from its stalk and crawl away. No, it's not a special-effect created for the latest Hollywood sci-fi adventure. This is&nbsp;just your everyday Earth-dwelling crinoid. These ancient <a href="http://www.ranker.com/list/marine-invertebrates-photos/ranker-science">ocean creatures</a>&nbsp;resemble&nbsp;beautiful underwater sea lillies&nbsp;in full bloom. But be careful - they're&nbsp;not really flowers. They just look&nbsp;that way as a clever disguise.What are crinoids? They look like aliens to the untrained human eye. They’re brainless animals that learned <a class="edS-cl" href="https://www.ranker.com/tags/how-to?ref=internalCrossLinking_tag">how to</a> swim. They’re stomachless life forms that eat constantly,&nbsp;and they grow arms out of their sides five&nbsp;at a time. And they essentially tie everything on Earth together. Mass evolutionary events, dinosaurs, and even church traditions all share connections&nbsp;to these underwater sea creatures.These amazing facts about crinoids will make you wonder if they were beamed down (or maybe beamed up) into the <a href="http://www.ranker.com/list/deep-sea-fish/ashley-reign">depths of Earth’s oceans</a> from some other planet entirely.

The fear of spiders is one of the <a href="http://www.ranker.com/list/most-common-phobias/desertrat89" target="_blank">most common phobias </a>in the world, so chances are you know someone who has it. Or maybe you yourself <a href="http://www.ranker.com/list/what-dying-from-a-spider-bite-is-like/laura-allan" target="_blank">are terrified of long-legged arachnids</a>, which would be unfortunate, because you're about to learn about&nbsp;a creature that will likely send you running for the hills.&nbsp;It'd called the&nbsp;Japanese spider crab. And while it's not actually a spider, this crab has long spider-like legs, scuttles across the ocean floor, and can get monstrously huge in size. If this knowledge isn't enough to give you the chills, then these Japanese spider crab facts and photos will definitely do the trick.You might think that <a href="http://www.ranker.com/list/scary-coconut-crab-facts/jen-jeffers" target="_blank">crabs aren't really that scary</a> - after all, they taste pretty amazing, right? Well, Japanese spider crabs are in a class of their own. They are not only the largest crab known to&nbsp;exist, but they can live longer than humans -&nbsp;and are carnivorous. They've even been known to chop off human fingers with their claws!Even if you don't find these big guys terrifying, that doesn't make them any less fascinating. Read on to learn more about this&nbsp;creepy but very interesting undersea giant.

When you think about sharks, you probably picture a mouth full of&nbsp;razor-sharp teeth. Thanks to <a href="http://www.ranker.com/list/best-bad-shark-movies/ranker-film">amazingly awful shark horror movies</a>, people generally&nbsp;share a deep&nbsp;fear of the creatures. While there have been various incidents of <a href="http://www.ranker.com/list/shark-attack-myths-and-facts/mike-rothschild">real-life shark attacks</a> throughout history, sharks are not the natural man-eaters&nbsp;people imagine them to be. In fact, scientists agree that you&#39;re more likely to be <a href="http://www.cbsnews.com/news/most-lethal-shark-or-falling-coconut/">killed by a coconut than by a shark</a>.&nbsp;

Sharks are actually astounding creatures that,&nbsp;contrary&nbsp;to popular belief, don&rsquo;t go around targeting every person in sight or capsizing boats out of revenge. They don&#39;t get enough&nbsp;credit for the positive roles they play in the oceans. For example,&nbsp;without sharks, the <a href="https://weather.com/science/news/ocean-without-sharks-bad-everyone-20140307">oceans would be riddled with dead aquatic life or overpopulated</a> with fast-breeding schools of fish. This is because sharks will often feast on carcasses and consume dense&nbsp;sea life populations, which&nbsp;helps to keep the oceans clean, healthy, and balanced.

So, to all the shark haters out there: don&#39;t hate, appreciate! Discover some fascinating shark facts and learn why sharks really are the&nbsp;bad*sses&nbsp;of the sea.&nbsp;

The open ocean is one of <a class="edS-cl" href="https://www.ranker.com/list/scary-things-seen-heard/amandasedlakhevener?ref=internalCrossLinking_keyword">the most terrifying</a> and unforgiving habitats on the planet. It is a <a href="https://www.ranker.com/list/worlds-most-terrifying-and-dangerous-plants/laura-allan" target="_blank">brutal home</a>, one that has shaped many of its inhabitants into&nbsp;formidable&nbsp;creatures. With so many dangerous animals lurking beneath the waves, a sort of biological arms race is in effect between predators and prey. After millions of years of evolution, there are now dozens of species of poisonous fish, sea snakes, and other ocean life that could seriously ruin a scuba diving vacation.&nbsp;The most poisonous sea animals in the world are as diverse as they are deadly. Every animal on this list is poisonous, not to be confused with all the venomous marine life in the ocean. The key difference is the delivery method, as venomous creatures actively inject their toxins while poisonous animals transfer their poisons only when touched or eaten. It's a small but important distinction, one that can be the difference between life and death in the wild.&nbsp;These are all&nbsp;of the <a href="https://www.ranker.com/list/poisonous-animals-how-quickly-they-kill/aaron-edwards" target="_blank">most poisonous animals</a> in the sea, and they make the ocean a more dangerous place to visit.&nbsp;

Let's face it: narwhals are weird. What is a narwhal, anyway? It's like a unicorn mixed with a whale, right? Like the similarly bizarre duck-billed platypus, narwhals appear to be some kind of odd hiccup of evolution, like something went terribly wrong, and boom: narwhals. In fact, a shocking number of people don't even think they're real!Why the confusion? Here are some quick narwhal facts that help explain why people can't believe these crazy beasts exist: the giant &quot;horn&quot; looks just like the classic idea of what a unicorn's horn looks like, you can't find narwhals at any aquariums or zoos, and they live in some of the coldest, most remote places on earth. That's why people think they're fake.&nbsp;So&nbsp;what are narwhal horns made of? The &quot;horn&quot; is actually a tooth, so... tooth stuff. Narwhal tusks are actually inside-out, with the hardest layers on the inside and the softest on the outside. That's the opposite of how human teeth are formed. As for the unicorn confusion, that stems from Vikings selling narwhal horns as &quot;unicorn horns&quot; to gullible medieval Europeans. Read on for more facts about narwhals that will help clear things up. Spread the word: they're real!

Why are humans interested in going into outer space when the weirdest things already exist on earth? Specifically, under the sea. You’ve heard of jellyfish before, but you’re about to meet your new favorite jellyfish - the lion’s mane jellyfish. Not only is it massive, but it looks like something that would befriend a child in a Disney movie about the importance of friendship.People have known about this incredible sea creature for years, one famous author even wrote them into one of his short stories as a villain.&nbsp;But people don’t really think about lion’s mane jellyfish until they <a href="http://www.ranker.com/list/weird-sea-creatures-washed-up-on-beaches/michaelgraff">wash up on the shore</a> and freak everyone out. These facts about lion's mane jellyfish are going to take you on a deep dive into an ocean of information.

What do you get&nbsp;when you combine the immortality of Highlander with the backwards aging ability of&nbsp;Benjamin Button? Turritopsis dohrnii,&nbsp;the immortal jellyfish! This little invertebrate is smaller than a pinky nail, measuring about <a href="http://www.amnh.org/explore/news-blogs/on-exhibit-posts/the-immortal-jellyfish/">4.5mm wide in its adult state</a>, but credited with being able to live forever. Of course, this excludes extreme physical damage or being eaten.The highlander of the sea is what's called a&nbsp;<a href="https://en.wikipedia.org/wiki/Hydrozoa">hydrozoa</a>, a class of invertebrates that can live in freshwater or the ocean, and immortal jellyfish&nbsp;can be found all over the world. They are transparent with a bright red stomach and can have up to 90 tentacles.&nbsp;Turritopsis dohrnii&nbsp;can also easily be confused with&nbsp;<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4209368/">Turritopsis&nbsp;nutricula&nbsp;and&nbsp;rubra</a>, which look similar but don't come with the cool immortality feature.While there are still many mysteries regarding immortal jellyfish, these tiny creatures are important to humanity for obvious reasons. But&nbsp;is this jellyfish really immortal? And, more importantly, would&nbsp;Connor MacLeod&nbsp;approve?&nbsp;

One of the most remarkable creatures known to science is a miniscule, and some would even say &quot;cute,&quot; aquatic creature with a snub nose and four pairs of legs - the tardigrade.&nbsp;These little creatures - sometimes called water bears -&nbsp;are incredibly strong, <a href="http://www.ranker.com/list/top-10-weirdest-things-sent-into-space/mark">incredibly resilient to environmental extremes</a>, and virtually immortal, essentially making them <a href="http://www.ranker.com/list/amazing-animal-abilities/jacob-shelton">the Incredible Hulk of animals</a>. Technically considered a &quot;micro-animal,&quot; these microscopic animals have been found in some of the harshest environments on earth.&nbsp;Everyday scientists are discovering more amazing facts about tardigrades, and only now are they beginning to understand what makes these little critters so incredible.&nbsp;One of the most incredible things about water bears is&nbsp;the implications that their biology might one day benefit humanity, making them&nbsp;one of science's hottest topics. Check out these astonishing facts about the amazing tardigrade.

Sea Creatures

Killer whales are some of the most beloved and revered animals that call the ocean home. Much like their dolphin relatives, orcas are incredibly intelligent and seem to share many familial and social bonds like humans. They can hunt in packs, traveling in formations and utilizing surprisingly knowledgeable&nbsp;techniques to kill prey.&nbsp;Thanks to movies like&nbsp;Free Willy, killer whales enjoy a&nbsp;positive reputation that even led to <a href="http://www.ranker.com/list/seaworld-secrets/michelle-nati">scandals being exposed at SeaWorld</a>&nbsp;out of concern for their safety.&nbsp;While the name may seem harsh, it's actually very appropriate&nbsp;as these aggressive animals are just behind some of the <a href="http://www.ranker.com/list/the-most-efficient-murderers-in-nature/justin-andress">most efficient killers</a> in the entire animal kingdom. In fact, even <a href="http://www.factfiend.com/great-white-sharks-scared-killer-whales/">great white sharks are terrified of orcas</a>, a lesson that would be wise for everyone to remember. Read on to learn some fascinating facts&nbsp;about the killer whale, an apex predator that knows no mercy.&nbsp;

There are plenty of <a href="http://www.ranker.com/list/scary-fish-facts/ranker-science">amazing ocean animals</a> out there, but one of the more overlooked ones is definitely the mantis shrimp. These&nbsp;<a href="https://en.wikipedia.org/wiki/Mantis_shrimp">stomatopods</a>&nbsp;are an ancient creature that are just as brilliantly colored as they are talented hunters. But they're definitely more than just a pretty face. Along with having a legendary&nbsp;mantis shrimp punch, there are many&nbsp;amazing facts about these sea creatures&nbsp;that definitely put them a cut above the rest.&nbsp;Some are brightly colored, while others are far more muted. Some are massive -&nbsp;the size of a small lobster -&nbsp;while others are barely the size of your finger. What's more is that we're still discovering more about this animal, because it is intensely secretive. What we do know about these critters is still enough to turn a few heads. By the end of this, you'll probably agree that they're super amazing, but probably will never want one as a pet, for very good reasons.

The depths of the sea are riddled with mystifying wonders and <a href="http://www.ranker.com/list/scary-fish-facts/ranker-science">bizarre ocean creatures</a>. While most sea creatures are only terrifying in appearance, there are some ugly ocean creatures that are frightening because of their hostile nature. The&nbsp;<a href="http://www.invadingspecies.com/invaders/fish/sea-lamprey/">sea lamprey</a>&nbsp;is one such creature.An invasive species,&nbsp;the prehistoric sea lamprey has an eel-like body&nbsp;and corrosive suction cup mouth.&nbsp;It is a parasitic nuisance to the various aquatic regions it inhabits within the United States and Canada. A&nbsp;sudden increase in sea lampreys during the 1940s greatly threatened and endangered a significant number of commercial fisheries throughout the Great Lakes because of their destructive feeding habits. Some interesting facts about sea lampreys not only concern&nbsp;their hematophagous feeding behaviors but also their overall biology. Prepare yourself for an underwater expedition to learn some scary sea lamprey facts that will terrify and educate you on this strange and destructive ocean creature.

Although their name would suggest otherwise, killer whales -&nbsp;also known as orcas -&nbsp;are generally thought to be&nbsp;gentle giants of the sea. Free Willy&nbsp;and other whale-centric films have managed to brand orcas as some of the friendliest&nbsp;marine mammals - and films like the <a href="https://www.ranker.com/list/what-happened-to-seaworld-after-blackfish-backlash/jessica-bedewi" target="_blank">controversial&nbsp;Blackfish</a>&nbsp;shed light on how they are mistreated in captivity -&nbsp;but in reality, orcas can be brutal and ferocious, hunting everything from small fish to seals and dolphins. Since orcas are extremely intelligent, they often use their developed communication skills and carnivorous instincts to dominate the ocean as apex predators.&nbsp;A group of aggressive orcas have the collective power to&nbsp;take down almost any threat, including humans.&nbsp;

Many may simply attribute orcas&#39; bloodthirsty tendencies to their natural instincts rather than any inherent sadistic preferences. The&nbsp;orca facts listed below, however,&nbsp;may give you a fresh understanding of where orcas get their unsavory nickname. While plenty of people fear sharks, perhaps these seemingly friendly marine mammals are the true, unrecognized&nbsp;threat of the sea.

The manta ray is one of the most mesmerizing and elegant creatures in the sea. It captures the imagination of divers around the world who will travel thousands of miles for a chance to swim with these majestic titans. Even though they are huge, manta rays pose no threat to humans and have a reputation for being gentle giants. In fact, manta rays probably&nbsp;have more reasons to be afraid of us than the other way around.Beautiful manta rays can be found in all of the world's oceans, but they can be difficult to track down. The ocean is huge, and even looking for a giant manta ray can be like looking for a needle in a haystack. They are way too big to fit in most aquariums, so it can be nearly&nbsp;impossible to get up close and see one for yourself. For those of us who can't strike out onto the open sea and go searching for a manta ray in the wild, these fascinating manta ray facts will open a window into the world of these mysterious animals.

If you take a look at a photo&nbsp;of sea creature eggs, you'll probably notice that some of them are seriously weird. These underwater inhabitants&nbsp;are&nbsp;wildly different from us and their&nbsp;offspring have to survive in an extremely hostile&nbsp;environment but&nbsp;that doesn't make their&nbsp;creepy sea eggs any less, well, creepy.&nbsp;To be fair, some of the&nbsp;strange eggs from ocean creatures aren't actually creepy. In fact, some&nbsp;are beautiful. Others are just ridiculous; they&nbsp;look like tornado fries, sometimes like swanky&nbsp;beaded curtains.Prepare to be amazed (or slightly grossed out)&nbsp;by these <a href="https://www.ranker.com/list/the-strangest-animal-fish-and-insect-eggs-in-nature/rylee_en" target="_blank">weird animal eggs</a>.

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