Black-devil Anglerfish

Squarenose Helmetfish

Scopelogadus beanii

The Squarenose Helmetfish is found between 800m to 4000m in the ocean. It received this unique name due to its scales reminding scientists of an armored helmet worn by medieval knights. It also has unusual holes around its face, and the white strands covering its face are sensory canals. 

Photo credit: https://www.vistaalmar.es/especies-marinas/peces-extranos/449-que-peces-mas-extranos.html

Pram Bug

Phronima sedentaria

The Pram Bug is a deep sea amphipod that is located between 200 to 1000m in the ocean. It has a translucent exoskeleton and can see primarily blue light. It is also is contained in a hollowed out barrel that is used for protection and to house babies. The image above is a female pram bug carrying its young. 

Photo Credit:https://ocean.si.edu/ocean-life/invertebrates/phronima-female-and-young

Periphyllopsis braueri

The  Periphyllopsis braueri is a tiny, deep sea jellyfish that is only 6 cm in diameter. It is red-chocolate  in color, and it has eight gonads. Furthermore, it is found at depths between 600m to 1000m. 

Photo credit: https://oceanexplorer.noaa.gov/explorations/19gulfofalaska/logs/aug2/aug2.html

Threadfin Snailfish

Careproctus longifilis

The Threadfin Snailfish resembles a prehistoric tadpole that is ghostly white. The holes in its face are large sensory pores that help them detect changes in the ocean. It is often found at depths between 1900 to 2997 meters. 

Photo credit: https://www.timeout.com/singapore/museums/creatures-of-the-deep

Spookfish

Winteria telescopa

The Spookfish’s eyes act as a telescope and are designed to maximize light in the deep ocean. Its eyes contain rod cells that help distinguish between ambient light and bioluminescent light. This adaptation helps avoid predators and catch prey.  

Picture Credit: https://www.natureplprints.com/deep-sea/deep-sea-fish-winteria-telescopa-15230734.html

Glowing sucker octopus

Stauroteuthis syrtensis

The Glowing Sucker Octopus can be found at 2500 m in the deep ocean. This unique creature has two fins that look similar to elephant ears. They move elegantly through the water by moving these fins and contracting their mantle. Evidence of this creature has only been spotted in the Atlantic Ocean.

Photo credit: https://octolab.tv/species/glowing-sucker-octopus/

https://ferrebeekeeper.wordpress.com/2011/03/14/glowing-sucker-octopus/

Vampire Squid

Vampyroteuthis infernalis

Even though the Vampire Squid is named after a notorious monster, this gentle creature does not live up to its name. It is only a foot long and occupies depths between 650m to 1500m in the deep ocean. Unlike other squids, it has reduced musculature and collects particles in the water column. However, it is capable of huge bursts of speeds. It uses bioluminescence to confuse both predators. 

Photo credit: https://ocean.si.edu/ocean-life/invertebrates/vampire-squid-hell

Giant Isopod

Bathynomus kensleyi

The Giant Isopod is an unsettling deep sea creature that crawls along the ocean floor scavenging for animal remains and detritus. These invertebrates are part of phenomenon known as abyssal gigantism, which is the tendency for  deep-sea dwelling invertebrates to be larger than their shallower-water counter parts. The Giant Isopod is found between 310m to 2140m in the ocean. 

Photo credit

https://seatrench.tumblr.com/post/615873390014791680/giant-isopod-bathynomus-sp-source

https://alchetron.com/Giant-isopod

Atolla Jelly

Atolla wyvillei

The Atolla Jelly is a fiery, red jellyfish that has an extraordinary display of bioluminescence. When the jelly is attacked, it uses bioluminescence to produce thousands of vibrant, blue flashes; the blue flashes act as an alarm, which draws in bigger predators and warns prey. The jelly can be found at depths between 600 m to 1500m, and it also has a long  hypertrophied tentacle that aids in reproduction. 

Photo credit: https://en.wikipedia.org/wiki/Atolla_jellyfish

https://en.wikipedia.org/wiki/Atolla_jellyfish

Giant Bell Jelly

Scrippsia pacifica

The Giant Belly Jelly has 256 tentacles attached to a gelatinous bell-shaped base. Like most cnidarians, the Giant Belly Jelly uses specialized stinging cells called nematocysts to catch its prey. When fish and other prey swim into its tentacles, the sensory projection on the cnidocyte (cell that holds the nematocysts) is activated. Then the nematocysts and barb are released, hitting the vulnerable prey and releasing a toxin into the prey’s body. The Giant Bell Jelly is found at 400 m in the ocean. It is related to the jellyfish, but it is categorized as a Hydrozoa (similar to the Portuguese- man-o-war)

https://vimeo.com/42551565

Photo Credit: https://www.pinterest.cl/pin/467107792572034837/

https://courses.lumenlearning.com/ivytech-bio1-1/chapter/phylum-cnidaria/