10 Most Bizarre Underwater Animals

The world of Deep Blue can be both truly beautiful and shockingly bizarre. I have gathered a collection of ten most bizarre underwater animals that I find very special. You can love them or hate them but you must agree that every one of them is really unique and has more character than any animal you can find on the surface.

1. Anglerfish are bony fish named for their characteristic mode of predation, in which a fleshy growth from the fish’s head (the esca or illicium) acts as a lure.




2. Bioluminescent Octopus is a rare animal that is known to be bioluminescent (glow with its own light) This syrtensis octopus was found about a half mile deep in the Gulf of Maine. Photophores (light-emitting organs) may be positioned to fool prey into swimming right into the mouth of the hunter.


3. Blobfish is often called the ugliest fish underwater. However, it is extremely unfair and you can see this for yourself simply by googling it. You can find many works of art, funny and cute, that prove blobfish to be very inspiring.Scientists call this fish Psychrolutes microporos, but also, more directly, “Fathead.”



4. Sea Pig is also called a sea cucumber or Holothuroid, this truly deserves the name sea pig. This was one of the most common and abundant animals caught off the coast of Antarctica. These animals are potentially very good indicators of environmental change as many occur both in the shallows and deeper water which will warm much less quickly.

sea pig, underwater animal

5. Dumbo Octopus is a Grimpoteuthis octopus found over the Mid-Atlantic Ridge and affectionately called Dumbo because of the way it flaps its ear-like fins to swim. I think it is both bizarre and adorable and hope you like it as much as I do.

Dumbo octopus

Identified as the highlight of the cruise by many of our scientists and viewers alike, this dumbo octopus displayed a body posture that has never before been observed in cirrate octopods.

6. Leafy Seadragon is found along the southwestern coast of Australia. This beautiful creature uses its fins not only to propel it through the water, but as camouflage to resemble a piece of drifting seaweed.

Leafy Sea Dragon

Leafy Sea Dragon

7. Portuguese Man-of-War is often confused with jelly fish, however it is not a single organism  but a colony of specialized minute individuals called zooids. This state-of-art grotesque animal has venomous tentacles that deliver a painful sting.

8. Red-Lipped Batfish is a very photogenic fish has red lips and fins made for walking the seafloor near the Galápagos Islands. The red-lipped batfish is one of some 60 species of batfishes, “flattened” from life on the seafloor and adapted to walk on modified pectoral and pelvic fins.

9. Napoleon Wrasse is one of the largest reef fish found in the warm waters of the Indian and Pacific oceans reaching the size of 2 meters. Its alternative name is Maori Wrasse as it resembles New Zealand Maori war print and every design is as unique as our finger prints. It is also a protogynous hermaphrodite which means that this wrasse can change its sex from female to male

10. Box jellyfish (class Cubozoa) are invertebrates distinguished by their cube-shaped medusae. Some species of box jellyfish produce extremely potent venom. Stings from these and a few other species in the class are extremely painful and can be fatal to humans. Despite the danger these sea animals impose on divers, they are loved by photographers as they easily make an artsy photo.

7 thoughts on “10 Most Bizarre Underwater Animals

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