Snuffling around the seabed, underwater is no easy task. It requires a lot of trial and error to find food. You need to know what you’re looking for, how to recognize its scent, and how to avoid eating something that would make you ill or kill you in the long run.
If you happen to wander too far into the sea, you’d be cursing the day that you were born. But if your birthday happens to be on January 14th, it just might be your lucky day after all: In this case, your birthday is when scientists discovered some species of deep sea creatures that are so disgusting that they make us all gag just thinking about them.
But don’t worry; we’re not going to ruin your appetite here by describing their grossness in detail—we’ll hold back until we reach another article. Instead, here are 15 of the worst sea creatures that we’ve found so far in our underwater exploration:

Anemone and Squid

The first two creatures on the list are both familiar: Anemone and Squid. We’re sure you recognize them as part of the marine team already. The Anemone is a small animal that lives on the ocean floor with a round body and numerous tentacles. A group of these animals can create a thick wall of stinging cells that make it hard for predators to move in close.
Squid are crustaceans that use their long bodies, powerful swimming muscles, and suckers to catch prey. They can grow up to 3 feet long. And unfortunately, they don’t always eat what they want to—they often end up eating other squids, fish, or even other squid! Just when you thought things couldn’t get worse, we present you with…

Sea Urchin

Sea urchins are known for their prickly spines and they have the ability to regenerate their limbs. They feed on algae and other microscopic organisms that live near the ocean’s surface.

Sea Hare and Sea Cucumber

Sea hares have a big, bushy body with short, stubby legs, while sea cucumbers have worm-like bodies. They live in the deep sea, and they use their tentacles to eat small crustaceans.
They also have these weird eyes that look like they’re always open.
A thing that makes them really stand out is the way they shoot these little purple balls of fluid up at predators so they can escape.
However, their defense mechanism doesn’t always work: If a predator is really sneaky and starts sneaking up on them from behind, it can sneak through one of its tentacles without getting hit by the purple ball of fluid.
Sea hares and sea cucumbers are the worst because you never know what you’re going to find when you go diving! You might get lucky and see some cool stuff like this or maybe even find yourself face-to-face with something that wants to kill you in one bite!

A Discus Fish (aka. Shrimp)

There are also some sea creatures that live just below the surface of the water and do not have any eyes at all. These creatures include the Discus fish, which has a long, thin body with five fins.
Despite the fact that it is transparent like a ghost, scientists can see this creature’s internal organs. It feeds on tiny crustaceans and plankton. There are also three different species of deep-sea anglerfish that can be found in these dark depths, as well as other types of fish like the snapperfish.

Ghost Shrimp

The Ghost Shrimp is a shrimp-like creature that has an eerie white color and long, thin-looking legs. It’s primarily found in the Caribbean Sea and the northern Gulf of Mexico.
Undersized with a flattened body, it’s thought to eat by catching prey in its claws and pulling it into its mouth.

Blue-Ringed Octopus

The blue-ringed octopus is a species of octopus found in the Pacific Ocean and Indian Ocean. These beautiful creatures are usually dark brown or purplish-brown, but sometimes they can be lighter shades.
This octopus has eight tentacles and two pairs of eyes, which are usually yellow in color, but sometimes they might be pink or light blue.
The underside of this octopus is bright red with white rings that vary in size and shape. They have no shells on their backs like other mollusks and crustaceans have; instead, they have a smooth skin that has shiny spots that look like rings from afar.
This animal grows to about six inches long and weighs about an ounce.

Lamprey and Shark

Lamprey and sharks are both deep sea creatures that can be found in the murky waters of the ocean.
Sharks are known for their 7-foot-long, tooth-filled maws and the ability to swim in any direction. Lampreys are a parasitic worm that has two long points with sucker mouths on them. These two groups of animals have similar features, but one is deadly and one is not.
The lamprey looks just like a jellyfish and has a mouth on the end of its body that it uses to suck blood from other fish. It also has a long tongue, which it uses to find its prey.
The shark only lasts three years before it dies, but they’re known for being able to survive near an area without food or water for up to 10 days. They use their camouflage abilities to resemble rocks or seaweed so they won’t be attacked by predators while they wait for food to come by. When attacking their prey, they open their mouths wide—sometimes reaching almost 12 feet across—and use sharp teeth and gills that can filter food out of the water quickly depending on what type of prey they’re hunting down.

Bottom Feeding Worms and Clams

There are many different types of animals and creatures that inhabit the sea. They all have their own specialized roles and playing a part in the food chain. When you step into the depths of the ocean, you’re often faced with an onslaught of weird-looking creatures. And while they may seem scary to your average person, they are actually helpful to our ecosystem. But when some species go too far, they start to cause more harm than good. This is true for bottom feeding worms and clams, who are actually just harming themselves by taking up too much space on the food chain.
Because these worms can grow up to 2 meters long and eat anything from mussels to clams (and everything in between) it’s really hard for any other species that would like to live in this area. Bottom feeding worms have no predators because they eat whatever comes into their territory, which means that these critters can really take over a given area.

Conch and Oyster

Both are often found in the same place. The conch is a pretty, five-pointed sea snail that looks like an adorable starfish or even a tiny pink flower. It’s worth mentioning that the conch is not actually a snail and has no shell. It uses its strong foot to anchor itself down to the seafloor and pokes out from sediment with its head. They don’t have any teeth, but they do have two tube-like structures called radula which they use to scrape specific types of food off of rocks underwater. Conchs feed on algae, bacteria, and other small creatures that live on coral reefs; you can also find them swimming around near larger predators like sea turtles or sharks.
The oyster shell is made of calcium carbonate, which it uses to build its protective armor as well as for making pearls when it reproduces. When it’s ready to reproduce, it will attach itself to a hard surface and shed its valves in order to release millions of eggs into the water column via water currents. Oysters mostly feed on planktonic algae, bacteria, and diatoms–and because they have such large shells, they are extremely difficult for predators like crabs or lobsters to crack open and eat them!


There are so many amazing sea creatures that you probably haven’t heard of and some that you should never see in your lifetime. These are the worst of the worst.

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