Five ‘sea aliens’ caught on camera – from fish with eerie see-through head to rarely seen squid with 13ft tentacles

LURKING, often thousands of feet heavy beneath the water surface, are creatures that sometimes don't look similar they should beryllium earthbound.

Humans are becoming well-acquainted with these alien-like creatures with the assistance of progressively blase underwater robots.

Barreleye fish

This creepy creature, known arsenic the barreleye fish, lives successful depths of up to 1km (3280ft) successful the bluish Pacific Ocean, wherever the airy seldom touches.

The 2 agleam greenish orbs that are disposable done the see-through dome connected its forehead are its eyes.

It is 1 of the weirdest-looking food successful the world, and was caught connected camera by researchers astatine the Monterey Bay Aquarium Research Institute (MBARI) earlier this year.

With its transparent skull and glowing greenish eyes, the barreleye specialises successful stealing prey from jellyfish.

Its tube-shaped eyes are similar tiny binoculars, with passageway imaginativeness that tin absorption connected infinitesimal details.

The barreleye, besides known arsenic the Macropinna microstoma, is lone a fewer centimetres successful length.

Bigfin squid

The rarely seen bigfin squid and its 13ft tentacles was filmed by an underwater camera some 20,000ft beneath the oceans aboveground earlier this year.

They're known for their agelong tentacles that tin turn up to 26ft long.

Only astir a twelve sightings of them person been confirmed worldwide.

Researchers came crossed the terrifying carnal aft they lowered a camera to the bottommost of the Tonga Trench successful the South Pacific ocean.

"We ever anticipation to spot this benignant of animal," Alan Jamieson, a prof and deep-sea idiosyncratic astatine the University of Western Australia who collected the footage, told Live Science in an email successful precocious September.

"[Bigfin squid] are not thing you would actively spell looking for, they are a taxon that relies connected america coming crossed them by accident."

Most documented bigfin squid sightings are "serendipitous filming from lipid and state activities," Jamieson said.

Dinner sheet jellyfish

The meal sheet jellyfish, besides known arsenic Solmissus sp., is 1 of the astir ascendant predators successful the ocean’s inky depths.

It has a reasonably unfussy appetite.

"This denizen of the heavy has an appetite for different gelatinous animals. Jellies, comb jellies, siphonophores, salps - they are each connected the paper for Solmissus," researchers astatine MBARI said successful an Instagram post.

"In fact, this jelly has 1 of the astir divers diets of each midwater animals - truthful far, we person seen Solmissus eating 21 antithetic types of gelatinous prey."

A bare meal sheet jellyfish swims with tentacles held guardant to drawback its prey by surprise.

"Forward-pointing tentacles besides assistance the meal sheet jelly drawback animals with agelong tentacles oregon skinny bodies, similar raking up twigs successful the lawn," MBARI researchers noted.

Basket star

Perched atop coral oregon rocks, this bizarre-looking carnal looks similar it has been pulled retired of Pans Labrinth.

It's swirling arms, which tin sometimes look similar histrion roots oregon fern leaves, are utilized to snag nutrient similar zooplankton.

These branches past walk nutrient towards its mouth, beneath the star's cardinal disk, according to MBARI researchers.

These deep-sea creatures tin live up to 35 years old, and measurement arsenic overmuch arsenic 11 pounds.

Giant oversea spider

With 8 agelong and spindly legs, this creepy crawly, known arsenic the elephantine oversea spider, sticks to the heavy seafloor.

While it lurks astatine depths of betwixt 2,200m and 4,000m (7,200ft –13,100ft), these creatures tin beryllium recovered worldwide.

"Instead of spinning a delicate web of silk to trap prey, a elephantine oversea spider uses an elongate, tube-like proboscis to slurp up its prey," according to researchers astatine MBARI.

It feasts connected creatures specified arsenic oversea anemones, hydroids, jellies, and different invertebrates.

The spider, whose authoritative sanction is Colossendeis sp., tin measurement up to 20 inches (51cm) - overmuch larger than its land-walking cousins.

By comparison, the Goliath birdeater - the largest spider connected onshore - has a assemblage magnitude of astir 13cm.