Mind-Blowing Deep-Sea Creatures You Never Knew

Mind-Blowing Deep-Sea Creatures You Never Knew

The oceans of the earth host many terrifying creatures that you’ve never heard of. These underwater beings are found thousands of feet below the surface of the sea, and they have special adaptive features that enable them to survive in this environment. Some of these creatures are strange to us.

Also, they have developed all these adaptabilities over several years so that they can thrive in these environments. Here are some of the mind-blowing underwater beings that have been discovered by underwater robots: 

A Frilled Shark 

A frilled shark is an underwater being that has few or zero surviving relatives. The way this creature produces is what makes it be categorized amongst the mind-blowing deep-sea creatures. The embryo of frilled-shark obtains energy from the sacs of yolk, and mothers give birth when the offspring is big enough to survive on their own. 


Research shows that hagfish are of around 76 species. These are mind-blowing creatures because of repulsive eating habits. Since they lack jaws, these beings eat other sea creatures’ decaying carcasses, and they do this by burrowing into these creatures using their tooth-like structures.1 

Faceless Cusk 

Faceless cusks are unique deep-sea creatures because they lack a face. Also, the mouth of this underwater being sits below the other parts of its body. Furthermore, this is a protrusible creature, which means it extends to catch a meal and then hide back inside its body. 

The Atlantic Wolffish

The Atlantic Wolffish is another mind-blowing deep-sea creature that has a mouth featuring sharp-edged, canine-like teeth. It consumes spiny or hard-bodied animals such as large-sized marine snails and sea urchins. 

Goblin Shark

A goblin shark is a flattened, elongated, and rare underwater being. Its mouth has 50 teeth, meaning it can attract everyone’s attention. Another excellent feature of this creature is that the adult female species are more extensive compared to the adult male species. Mostly, females measure up to 11 inches long as the males measure up to 8.66 inches long. 

The Red Vampire Squid

The Red Vampire Squid is a mind-blowing deep-sea creature that consumes ‘marine snow,’ which is the decaying organic material found on the ocean’s floor. Dead leaves are excellent examples of these decaying natural materials. 

The Anglerfish

The anglerfish falls under the category of the ugliest creatures in the world. Research shows that there are over 200 species of this underwater creature, and all these are divided into four different groups. These groups include deep-sea angler, goosefish, frogfish, and batfish. 

A Grenadier ( Rat-tail) 

These underwater beings received the word ‘rat-tails’ because of the long, tapered bodies. You can get these creatures in warm or temperate waters, and they are around 300 species of these beings. 

The Ghoulish Chimaera 

You can get these mind-blowing creatures on temperate to cold waters, and they live at sea-depths of around 8,200 feet or more. Also, these creatures are approximately 47 species, and their length ranges between 24 and 80 inches. 

A Sarcastic Fringehead

For this underwater creature, you can get it mostly on the northeast Pacific Ocean. It hides in a tube-like construction that has been created by other sea creatures. 

A Barreleye Fish 

A barreleye fish is an underwater creature featuring large, tubular eyes that can rotate within its head. It is with this rotational ability that these creatures manage to face forward and see anything they’re eating or look upward and locate potential prey. 


Blobfish is the ugliest animal in the world that dwells in the Indian Ocean, Atlantic Ocean, and the Pacific Ocean. You can get it at the depths that range between 330 and 9, 200 feet. Also, this creature is less dense compared to water. 

The Japanese Spider Crab

You can get the Japanese spider crab in the Pacific Ocean at the depths of between 160 and 2,000 feet. An adult Japanese spider crab weighs up to 44 pounds, and it is around 15 inches wide. 

Deepsea Lizardfish

You can get this creature at a sea-depth of around 3,200 feet. It features largemouth and sharp teeth, which allows it to catch prey on the floor of the ocean. 

Bougainvillea Superciliaris

Bougainvillea Superciliaris are bioluminescent underwater beings that create their own light whenever in a dark environment. Other than eating through filter-feeding, these animals also live in colonies or solitary lives. 

The Slender Snipe eel

The slender snipe eel is a compact deep-sea critter that features a length of at least four feet. However, this creature cannot weigh over six or seven ounces. Other than this, these creatures are unique because of their broadcast spawning method of production. 


  1. Miller and Z. Ettinger, “16 creatures from the bottom of the ocean that will give you nightmares,” INSIDER, accessed March 31, 2020, https://www.insider.com/strange-deep-sea-creatures-trivia-facts-2018-4
  2. Bassi, “21 Creatures From The Deep Sea That Will Absolutely Give You Nightmares,” BuzzFeed, accessed March 31, 2020,https://www.buzzfeed.com/ishabassi/terrifying-deep-sea-creatures
  3. Forna, “11 Truly Nightmare-Inducing Deep Sea Creatures That Barely Seem Real,” twenty-two words, accessed March 31, 2020, https://twentytwowords.com/truly-nightmare-inducing-deep-sea-creatures-that-barely-seem-real/
  4. Olander, “25 Deep-Sea Creatures That Will Creep You Out,” SPORTFISHING, accessed March 31, 2020, https://www.sportfishingmag.com/25-deep-sea-creatures-that-will-creep-you-out/