22 Strange Deep Sea Creatures You Probably Haven’t Seen Before

Just look at the world around you… Right here on the ocean floor… Such wonderful things surround you… What more are you lookin’ for? This is an excerpt from the lyrics of Little Mermaid’s Under the Sea song. Indeed, as what “Sebastian the Crab” sang, there are a lot of wonderful things and creatures on the ocean floor. These weird sea creatures are free from the prying eyes of human beings, as they confined themselves at the deepest part of the oceans where very few humans can reach them. Though this list is endless, we are here to show you the 22 most strange deep sea creatures that are not only different but also very scary to look at. So, let’s get started.

22 Strange Deep Sea Creatures Around The World

Though wonderful as they may seem, there are a lot of deep sea creatures that can amaze humans because of their bizarre and strange looks and attributes. As a matter of fact, there are a lot of these weird creatures under the sea that we seldom see but they are just there… living and existing. Even today humans and machines are sent at the bottom just to check for such strange deep sea creatures. The main reason is that they ignite curiosity in the human world.

Though away from the interference of human nature and living a peaceful life underwater, these strange sea creatures have been caught on many films. In fact, some were caught while trawling at the deep sea. Here, we have compiled 22 of such strangest deep sea creatures and every time you look at them, you will have an inner curiosity to unveil what life at sea is.

1. Squidworm

weird sea creatures

This strange deep sea creature was discovered in the year 2007 between Indonesia and Philippines, on the area named “Coral Triangle”. The squidworm has 10 tentacle-like appendages on its head, which are all longer than its own body. These appendages are used to collect food, which is usually a dead particulate organic material or detritus falling in the water.

2. Sea Pens

Strange Deep Sea Creatures

Credit: martycohenphotography

They are named sea pens because of their close resemblance to the feather-like antique quill pens that were used centuries ago. These strange deep sea creatures are found on the shallow waters of Long Sound, New Zealand and are still living in colonies. They have root-like penduncles which help them to attach themselves on the seafloor. The best part about sea pens is that they have the ability to re-locate and re-attach themselves if necessary.

3. Salp

Strange Deep Sea Creatures

Credit: reddit

Chances are that you may have seen a salp in your life but you would not have known why it is named such. Salps are often seen in cold and pleasant seas. They swim individually but most often, they attach themselves to fellow salps to create and produce a long line of colony.

weird sea creatures

Since salps condense their waste products into carbon-containing pellets, they effectively remove carbon from the water surface and play an important role in carbon cycling. Isn’t this amazing?

4. Sea Pig

Strange Deep Sea Creatures

Credit: echinoblog.blogspot

This may be one of the strangest looking creatures under the sea. Sea pigs have enlarged tube-like feet that look like a human leg. They feed themselves by extracting organic particles from deep-sea mud and they use their olfactory senses to find their food. They live at the very bottom of the ocean and are the most plentiful creatures down there. However, many in numbers as they are, they may face extinction because of deep-see trawler which can catch and kill 300 sea pigs in just one single move.

5. Christmas Tree Worm

 strange sea creatures

Credit: smithsonianmag

Who says that there are no Christmases under the sea? Well, that notion needs to be changed once you see this weird Christmas tree worm. It is right there underwater all year round. This sea creature is named Christmas Tree Worm because they have two “crowns”, which are shaped like a Christmas tree and the worm can mean the spiral structure of this specie. This sea creature is usually found at the Great Barrier Reef’s Lizard Island and are commonly seen embedded on the heads of massive corals.

6. Goblin Shark

 Strange Deep Sea Creatures

Credit: ocean.si.edu


This specie is the remaining member of a lineage from 125 million years ago and is also called “living fossil”. Goblin sharks have rare contacts with humans because they live deep in the sea. Hence, they are not well known compared to the other sea creatures mentioned in this article. One distinctive feature is their long and flat snout which closely resembles a sword blade. Since this creature has minimum contact with humans, there is little information available about their lifestyle and beginnings.

7. Blobfish

strange sea creatures

Credit: theinertia

At a first glance, a blobfish might scare you if you are not familiar with it. They can be found off the water coasts of mainland Australia, Tasmania and New Zealand. They are one among those strange deep sea creatures without any skeleton and muscles. The blobfish is made up of jelly-like flesh, which is less dense in water, making them to withstand the pressure deep in the sea. Blobfishes are often caught by trawling which will be the main reason for their extinction.

8. Dumbo Octopus

weird sea creatures

Credit: aquariumofpacific

Among all the octopus species, dumbo octopuses are considered as the deepest living creatures. They typically live on the sea floor or just float slightly above it. They are named Dumbo Octopus because of the resemblance they have with Walt Disney’s character Dumbo. They feed themselves by swallowing worms, bivalves and crustaceans. This specie of the octopus can be found worldwide and is most commonly seen in the waters of Oregon, Philippines, Papua New Guinea, New Zealand and Australia.

9. Bobbit Worm

strange sea creatures

Credit: alertdriver

A bobbit worm may look so innocent at times but don’t be deceived. They can be one of the ocean’s best predators. They root themselves on the ocean floor and hid half of their body and wait for their prey. Once their victim comes, they can extend their hidden body up to 10 feet long to catch it. They have extremely sharp teeth, with which their preys are usually cut into half.

10. Munnopsis Isopod

Strange Deep Sea Creatures

Credit: coml.org

Munnopsis isopods are eyeless marine creatures. They bear a resemblance to shrimps and have significantly big antennae. Isopods are common in the West Coast of North and South America. Their bodies are very lightly calcified and are in a shade of creamy-tan.

11. Flamingo Tongue Snail

strange deep sea creatures

Credit: pinterest

These sea creatures are commonly found in the tropical waters of the western Atlantic Ocean including the Bermuda, the Gulf of Mexico, the Lesser Antilles and the Carribean Sea. The snail’s color is quite catchy: it has bright orange-yellow with neat black markings. In fact, many divers thought the this bright orange-yellow color was a shell but they didn’t know that it was the color of the animal inside it. Flamingo tongue snails usually feed on toxic sea fans.

12. Flower Hat Jellyfish

weird sea creatures

Credit: featuredcreature

This type of jellyfish is found in the West Pacific of southern Japan. Don’t fall for its looks, as it can kill and eat an entire fish. It uses its tentacles to sweep around and position itself to get its food (which are frequently small fishes). Its sting may not be deadly to humans but it can leave a rash.

13. Leafy Seadragon

Strange Deep Sea Creatures

This strange sea creature can be mistaken as an underwater plant because of its looks. They also remind you of Chinese dragons. In reality, however, these leafy seadragons are actually bony fishes. They are regularly seen along the southern and western coasts of Australia. They are also used in alternative medicines.

14. Atolla Jellyfish

Strange Deep Sea Creatures

Credit: leisurepro

An atolla jellyfish looks like a red crown with tentacles. Their color helps them disappear in the deep sea’s darkness, thus, making it extremely hard for predators and preys to find them. They are bioluminescent which initiates a number of flashes and scares their predators away.

15. Mola Mola

weird sea creatures

Credit: nature.ca

Mola mola is considered as the heaviest of all bony fishes. They are usually found in temperate and tropical oceans around the world. Their diet usually consists of different jellyfishes, salps, squids and crustaceans. Mola Mola may be big and heavy but many assured that they don’t pose threats to humans and can interact with us well.

16. Water Bear

Strange Deep Sea Creatures

 Credit: jimgworld

In the year 2013, water bear was named as the toughest animal on the planet for the reason that they can survive even after being frozen or boiled and still live for a maximum of 200 years. To surprise you more, they can even live for a decade without water and more to that, they can even survive in space.

17. Mantis Shrimp

Strange Deep Sea Creatures

Credit: radiolab

The color of these deep sea creatures have the ability to attract any being. As an animal, they have the best vision, as they have sixteen color-conceptive cones while humans have only three. They may be glorious to look at because of their attractive and amazing colors but do not be deceived as they are one of the most violent creatures on earth. They have two appendages which accelerates as the same velocity of a gun shot. They can also cause an undersea shockwave because of their fast speed, which can kill their preys in seconds.

18. Red-Lipped Batfish

Strange Deep Sea Creatures

Credit: adlayasanimals.wordpress

Red-lipped batfish is also called Galapagos batfish because they are found in the Pacific Ocean around the Galapagos Islands. These weird sea creatures are seen within the sand or the ocean floor. They swim to surface of deep waters from time to time. Their body is light-brown in color and there is a shade of grey on its back. Their lips are, of course, bright red in color and hence the name “Red-Lipped Batfish”.

19. Frog Fish

Strange Deep Sea Creatures

Credit: life-sea.blogspot

This is a type of anglerfish, which is commonly found in the tropical and subtropical regions of the Pacific and Atlantic Ocean. They are also sightings of this fish in the Indian Ocean and the Red Sea. They have a solid appearance and have a scaleless body. They also have small, round gill openings at the back of their pectoral fins.

20. Dragon Fish

weird sea creatures

Credit: incredipedia.info

Just like dragons, a dragon fish is also a predator that dwell in the deep oceans. Just like atolla jellyfish, a dragon fish can also produce its own light and is considered as bioluminiscent. They use their bioluminiscent feature to lure their preys.

21. Basket Star

strange sea creatures

A basket star is actually a group of brittle stars. As most of the strange deep sea creatures in this article, a basket star also lives deep in the sea and can last up to 35 years without any external interference. A basket star has 5 arms budding from their central disk, however, each of these arms branch out again and again until they are kind of mixed-up into a basket, hence the name basket star.

22. Axolotl

Strange Deep Sea Creatures

An axolotl may look quite strange but it is very popular. They are closely related to a salamander and also called the Mexican walking fish. As a matter of fact, axolotls are already considered oen among the endangered species, as there were many attempts to breed them and release them back into the wild. Axolotl is a carnivore. It feeds on worms, insects and small fishes.

These underwater sea creatures are the strangest of their kinds. Some of you may be already familiar with them because they are commonly seen on some parts of the world while some maybe rare and most often than not, they isolate themselves and stay at the deepest part of the ocean. No matter how they look, no matter where they are, these strange sea creatures are a part of the biodiversity and ecology that lets marine life survive on their own.

Some of these creatures are already extinct or on the verge of extinction because of human interventions like deep sea trawling and divers who take a fancy on how they look and take them out of their natural habitat. Marine life is very different from our own. With this, it is better if we leave what belongs to the sea into the sea. Once we take them out from their natural habitat and put them on our huge aquariums, we are actually altering the way they live. Eventually, they die. Once they face extinction, it might greatly affect other marine lives under the sea which in turn will also affect our lives as humans. We may not experience it now, but we certainly would not want our grandchildren and their children to suffer the consequences of our actions. These creatures may look weird, strange, and at times scary, but surely they deserve to live and should be taken care of.

Hope you enjoyed reading this article. Tell us in comments which creature in this list amazed you the most and if you have any other creature to tell our other readers about, feel free to write.

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