
It can be easy to forget that an alien world lives right beneath us – the mysterious ecosystem of the deep ocean of which we've explored less than 0.05 per cent.

Here, creatures of your nightmares lurk far below the surface and these creepy images could make you think twice before dipping your toes at the beach again.

The Twitter feed of Murmansk-based fisherman Roman Fedortsov has revealed a trove of terrifying catches, from eight-legged arthropods to fish with human-like teeth.

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The Twitter feed of Murmansk-based fisherman Roman Fedortsov has revealed a trove of terrifying catches, from eight-legged arthropods to fish with human-like teeth. These incredible creatures live in the 'twilight zone' of the ocean. Among the ones brought to light is the frilled shark (pictured)– an elusive eel-like shark with rows of terrifying teeth

ALIEN FISH These incredible creatures live in the 'twilight zone' of the ocean. This is the area between 660 to 3,300 feet (200 to 1,000 metres) below the surface which is known as the Mesopelagic zone. Here, creatures of your nightmares lurk far below the surface and these creepy images could make you think twice before dipping your toes at the beach again. Among the many creatures brought to light is the frilled shark – an elusive eel-like shark with rows of terrifying teeth. The fisherman has also revealed photos of the bizarre chimaera, a fish commonly known as the 'ghost shark.' However, some of the stranger creatures stumped even Mr Fedortsov. Advertisement

Mr Fedortsov fishes in the Barents Sea - a shallow sea that opens onto the Arctic Ocean.

These incredible creatures live in the 'twilight zone' of the ocean, writes Science Alert.

This is the area between 660 to 3,300 feet (200 to 1,000 metres) below the surface which is known as the Mesopelagic zone.

Below this is the zone of complete darkness called the bathyal zone, spanning 2,200 to 13,000 feet (1,000 to 4,000 metres).

Among the many creatures brought to light is the frilled shark – an elusive eel-like shark with rows of terrifying teeth.

The frilled shark is often called a living 'relic' due to its primitive features.

He also tweeted an image of a wolf fish and a bearded sea devil - one of the world's most rarely seen fish.

He found a longhorn cowfish, recognisable by its long horns that protrude from the front of its head and a cookiecutter shark, which is part of the 'sleeper shark' family.

Another strange creature was identified as an Angler fish. An odd fleshy protrusion coming from the fish's head acts as a lure for prey.

Mr Fedortsov identified this find as a wolf fish. It lives in the area between 660 to 3,300 feet (200 to 1,000 metres) below the surface which is known as the Mesopelagic zone

Pictured is a bearded sea devil which is one of the world's most rarely seen fish. Mr Fedortsov said this one was a female and is found in both the mesopelagic and bathypelagic zones

'No need to invent "Monsters". Nature has already done it' the fisherman tweeted with the picture of this unidentified crab. Mr Fedortsov fishes in the Barents Sea - a shallow sea that opens onto the Arctic Ocean

Pictured is one of his scary-looking finds. A Twitter user identified this as a longhorn cowfish, recognisable by its long horns that protrude from its head

The fisherman has also revealed photos of the bizarre chimaera, a fish commonly known as the 'ghost shark.'

Mr Fedortsov works on a trawler and began sharing his remarkable finds in 2016, the Moscow Times reports.

Chimaera are known for their winged fins and long, whip-like tails – and an image captured by Fedortsov reveals their haunting green eyes.

This fish was not identified by Mr Fedortsoz but some users on Twitter suggested it was an Angler fish. The unusual fleshy protrusion coming from the fish's head acts as a lure for prey

Mr Fedortsov tweeted the image of this shark with the comment 'I'll be back in Your Nightmares'. This is probably a cookiecutter shark, which is part of the 'sleeper shark' family

'I hope you’re not eating at this moment' Mr Fedortsov tweeted with this gruesome creature which he was also unable to identify

Mr Fedortsov tweeted 'Quick rise from the depths' with the picture of this strange goggle-eyed fish. The bizarre creature stumped the fisherman and no one on Twitter was able to identify it

All these peculiar images come from the Twitter feed of Murmansk-based fisherman Roman Fedortsov. While he may be better versed in deep sea creatures than most people, some catches had even Fedortsov stumped

But, these glow only when exposed to light. In the darkness of the sea, ghost sharks appear to have sunken, 'dead' eyes.

Like sharks and rays, chimaeras have a skeleton made of cartilage.

While he may be better versed in deep sea creatures than most people, some catches had even Fedortsov stumped.

With one photo of a bizarre, alien-like creature with a massive jaw and sharp teeth, the fisherman wrote, 'We're still arguing about this one. What is it?'

These creepy images could make you think twice before dipping your toes at the beach again. Some catches - such as this bright red one - had even Fedortsov stumped

One twitter user suggested this was a black pacu fish. It is a tall fish with large eyes and a slightly arched back. It is black and grey in colour with spots and blemishes

Mr Fedortsov took to social media to share images of the deep-sea creatures caught in his nets. This strange creature baffled Twitter users and was not identified

These mutant-like fish were one of the many catches that stumped Mr Fedortsov. He said they resembled dwarfs from Lord of the Rings. We know more about Mars than deep under our own oceans

Mr Fedortsov said this strange creature was a type of Halibut. 'ScaryBeauty on my hands', he tweeted. Halibut are the largest of all flat fish and have been an important food source to Native Americans and Canadian First Nations for thousands of years

This ominous looking flatfish as a type of European plaice, according to Mr Fedortsov. Adults have a roughly diamond-shaped outline, and are readily identified by their bright orange or red spots

The fisherman works on a trawler and began sharing his remarkable finds in 2016. It can be easy to forget that an alien world lives right beneath us – the mysterious ecosystem of the deep ocean of which we've explored less than 0.05 per cent. This was one of the finds that left Mr Fedortsov baffled

Among the many creatures brought to light is the frilled shark – an elusive eel-like shark with rows of terrifying teeth. The frilled shark is often called a living 'relic' due to its primitive features

On a photo of a bizarre, alien-like creature with a massive jaw and sharp teeth, the fisherman wrote, 'We're still arguing about this one. What is it?' On Twitter, some argue that the specimen in question is a stoplight loosejaw, a deep-sea dragonfish from the genus Malacosteus

The fisherman has also revealed photos of the bizarre chimaera, a fish commonly known as the 'ghost shark.' Their eyes glow only when exposed to light. In the darkness of the sea, ghost sharks appear to have sunken, 'dead' eyes

A terrifying fish with massive teeth is also among the many remarkable catches. According to Fedortsov, the creature is a black scabbardfish

Murmansk-based Roman Fedortsov has revealed a trove of terrifying catches, from eight-legged arthropods to fish with dagger-like teeth. Pictured are two unidentified creatures

One picture reveals a massive orange 'sea spiders' – a marine arthropod with long, spindly legs that's roughly the size of a human hand

On Twitter, many have chimed in with their thoughts, with some arguing that the specimen in question is a stoplight loosejaw, a deep-sea dragonfish from the genus Malacosteus.

And, not all of the catches are fish.

One picture reveals a massive orange 'sea spider' – a marine arthropod with long, spindly legs that's roughly the size of a human hand.

Creatures of a similar appearance were recently discovered in the Arctic and Southern Oceans, where they've been observed at a staggering leg-span of nearly 25 centimetres.

Another bizarre fish, with bulging red eyes and drooping red lips, was identified as a type of grenadier. These are also known as rattails, and can be found deep below the surface from the Arctic to the Antarctic

The fisherman works on a trawler based out of a port in northwest Russia, and began sharing his remarkable finds earlier this year, The Moscow Times reports

While the expert has identified a number of the specimens, some remain a mystery. On this clear creature, he remarked 'who are you?'. Twitter users below were also unable to identify the creature

Along with his Twitter account, Fedortsov has also shared stunning images of his catches on Flickr, including this deep sea shark with terrifying bright yellow eyes

These sea 'spiders' are actually pycnogonids, a type of primitive marine arthropod, and they grow to massive sizes in a phenomenon known as polar gigantism — but scientists don't know why.

A terrifying fish with massive teeth is also among the many remarkable catches. According to Fedortsov, the creature is a black scabbardfish.

Another bizarre fish, with bulging red eyes and drooping red lips, was identified as a type of grenadier.

These are also known as rattails, and can be found deep below the surface from the Arctic to the Antarctic.

The Twitter feed of one Russian fisherman could make you think twice before ever dipping your toes at the beach again. Pictured are two unidentified deep-sea creatures

The fisherman tweeted a photo of this remarkable creature, noting its 'beautiful' colour. Thousands of feet below the sea, they are subjected to extremely high pressures

While deep-sea creatures tend to have an alien-like appearance to begin with, it's also known that changes in pressure can affect the appearance of some when they're brought to the surface.

Thousands of feet below the sea, they are subjected to extremely high pressures.

While some are able to withstand dramatic vertical migrations, the lower pressures of the world above are known to cause metabolic problems for others, and can even alter their shape.

This effect can be seen most famously in the case of the blobfish – a creature voted the world's 'ugliest animal.'

Not all of the catches are fish. The deep-sea fisherman tweeted this photo, writing 'I'm watching you'. While deep-sea creatures tend to have an alien-like appearance to begin with, it's also known that changes in pressure can affect the appearance of some when they're brought to the surface