A man has posted an incredibly terrifying image of a bizarre sea creature, and it's reminding people of the movie Teeth.

Let's be honest, the ocean is a place full of known creatures that the vast majority of us would probably cry if we met face to face.

Considering that a large number of the world's oceans are unexplored, it stands a fair chance there are so many species out there that we have never, and probably will never encounter.

While this is arguably for the best, that doesn't stop the occasional creature popping up from time to time that leaves people startled.

With that in mind, it shouldn't come as a surprise that a horrendous worm-like critter with giant teeth has been photographed and posted on Instagram...

Craig Evans, behind the Instagram account @costal_foraging_with_craig, shared the snap much to the horror of many viewers.

He wrote: "I found this dead 'Sea Lamprey' while fishing for sea trout in a West Wales river. These wonders of nature spawn in freshwater, feed on tiny algae and microorganisms until they migrate to sea to prey on larger fish.

"It's fearsome mouth attaches itself to the side of the fish and sucks it blood etc. This one was around 2ft in length and weighed around a Kilo."

A two-foot sea monster that sucks blood out of poor unsuspecting marine life sounds like something out of a horror movie, right?

Craig concluded: "I was fortunate enough to stand over a number of these spawning in fast flowing water about a foot deep. After spawning in June they all die. I've seen many of these over the years and the only mammal that eats them are otters and then only [the] last few inches of its tail. These ancient species of jawless fish are a sign of a healthy ecosystem."

Regardless of these creatures having a part to play in the circle of life, that didn't stop people from sharing their utter horror.

One comment compared it to the movie Teeth, which centers around a woman whose vagina has teeth, and you can tell where it goes from there... the comment read: "Reminds me of the film... Teeth."

Another horrified viewer said: "That’s my nightmares sorted for tonight then," while a third person said: "What in the devilish nightmare of hell is this!?!"

Credit: Instagram Credit: Instagram Credit: Instagram

The horror being shared seems pretty understandable, though other comments suggested that these creatures can be eaten. Each to their own I guess.

Featured image credit: Steve Russell/Getty

There might have been a time where I thought octopuses were cool, funny, and maybe even a little cute. When you're a child, animals populate most of the books you read, as well as the TV shows and movies you watch. I'm sure there were plenty of eight-armed oddities that I found entertaining back then, but as an adult... they kind of freak me out. It's not just that they are gross and slimy - after all, I will happily eat octopus in a restaurant or chow down on some calamari any day. There is something so strange about the creature that I just can't handle them. Luckily for me I haven't even seen one in real life, because I think I would be terrified if I were to encounter one face to face. On the other hand, I still find them fascinating. Especially when you start looking into the idea of the giant squid - whether it be in myth, fiction or the real scientific possibility of these creatures existing deep under the sea. That's why I absolutely loved the appearance of the Kraken, a gigantic tentacled creature from legend, in Pirates of the Caribbean: Dead Man's Chest. After seeing that movie I was terrified but intrigued, and even had a recurring dream about being chased through the ocean by that monster. When you think about the way the octopus attacks its prey, if it were bigger we would be in a lot of trouble. When you think about it, the octopus is a brilliantly designed animal. Despite its ridiculous appearance, a far stretch from land-based mammals like us, it has a lot of weird and effective survival skills. The boneless creatures have three hearts, eject ink to confuse predators, can re-grow their tentacles, and can squeeze through tight spaces far smaller than their bodies appear to be. But the scariest reveal of all has to be this video, which shows a seagull being drowned by an octopus. Rowan Treece, who uploaded the video onto Youtube, said in the description: "I captured this rare event when we were feeding the seagulls hot chips down the richmond river northern nsw, it grabed [sic] the seagull while it was swimming waiting for the chips". Warning: graphic content. I've had enough food stolen by seagulls to have a life-long grudge, but even I feel quite sorry for the unlucky bird here. It is dragged under by the ambitious octopus, who seems to have claimed a prize much larger than its usual prey of small crabs, scallops and snails. I don't think I'll be getting the images of this octopus out of my head for a while, so it may be best for me to watch something a little less terrifying. If you are looking for more rare ocean sightings, you should definitely check out the time that an extremely rare albino white whale surfaced in Australia.

There's no doubt that the natural world can be utterly awe-inspiring ... and completely disgusting. Yes, there are plenty of scenes in nature that David Attenborough wouldn't be willing to film, which are revolting enough to turn the stomach of even the strongest person.

If you want an example of just how gross (and fascinating) nature can be, then take a gander at the following footage, which has gone viral on social media this week.

The incredible short clip shows the world's largest animal, a blue whale, defecating while underwater, creating a mesmerizing luminous green display. The footage was recorded by researchers observing whales migrating south along the West Australian coastline, using drones flying high above Point Picquet; three hours south of Perth.

Take a look (if you dare) at the moment the whale defecates on camera below: 

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Commenting on the incident in a later interview with ABC News, Ian Wiese and Rodney Peterson (of the West Australian Centre for Whale Research) told reporters that they captured two separate defecations. Peterson stated: "It was the first time I had seen a blue whale, which was incredible enough, but then I realized it was doing something pretty interesting. Fair to say, it left quite a streak in the ocean."

Meanwhile, whale expert Curt Jenner stated: "It's an exciting development given [blue whales] are still one of the more endangered animals on the planet, yet we know so little about their behaviour. Knowing they are able to source a regular food supply is an indication of the health of the ocean and that should be of interest to everyone."

He continued: "[As whales] swim along and beat their tails, they distribute their feces and similarly, as they dive to the depths and surface again, they're mixing that throughout the different layers of the water columns."

Check out this cool video of a humpback whale surprising paddlers:

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He added: "It's an incredible process of taking the bottom part of the food chain up to the surface then back down again ... Oddly, it smells a lot more like dog poo than anything fishy. It's otherwise perfectly disgusting."

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But this isn't the first time we've written about these incredible sea mammals. Check out this article we penned all about how humpback whales ingeniously subdue their prey.

A group of golfers was left in awe after finding a giant crab clinging to their clubs in what was supposed to be a quiet few holes.

In case you needed any more proof that things really are bigger and scarier Down Under, the incident occurred on Australia's Christmas Island.

In the video, local business owner Paul Buhner and his friends say they turned away from the golf bag for a brief moment, only to turn back and see the shelled beast clutching the clubs.

The crab in question is a coconut crab - which is also known by locals as a robber crab or a palm thief. According to Auralia's official national parks website, these nicknames come from the fact that the coconut crab has a tendency to carry off "any foreign items it comes across" - but has a particular fondness for food and shiny items.

Check out the incredible moment below:

"Now that's what we call a robber crab," Paul says in his video, before asking the crab: "Hello, buddy! What're you stealing? What're you stealing?"

Paul then insists: "We have not put [the crab] here. This has climbed up here while we've been putting out."

The Aussie then jokes that one of them could lose a finger to the clawed behemoth.

The video then shows one of Paul's friends attempting to carefully remove the crab from his clubs - giving viewers a truly frightening perspective of just how large these creatures are.

But the crab won the tussle, and with Paul laughing behind the camera, he reveals that the crab had actually snapped the club in half, using his claw "like a chainsaw".

Credit: Mauritius Images GmbH / Alamy

These exceptional climbers can actually grow to be a meter across and weigh around 4kg (8.8lbs). Not only that, but they can also live for up to 50 years.

I can safely say I would not have reacted as cool and calm as these guys! I'd probably let the crab just take my clubs... and the keys to my car.

Featured image credit: Blue Planet Archive / Alamy

The ocean contains a wealth of animals that we know nothing, or very little, about. One of those animals is the octopus; there are only a few species of octopuses that have been extensively studied and researched by scientists, with plenty more remaining elusive, mysterious and lurking somewhere in the deep ocean. These blue-blooded creatures have some pretty strange hunting, social and mating behavior and they are even able to regrow their arms... so yeah, all in all, they're pretty mental. And an octopus video proved my point even further went it recently went viral.

If the idea that these crazy things occupy the water and not land gives you some comfort when you sleep at night, then I'm sorry, because what I'm about to show you will likely give you some serious nightmares. In the footage which can be seen below, an abdopus octopus in Australia clambers out of the water and onto land in order to hunt nearby crabs.

The octopus video, which featured as part of the BBC program The Hunt, shows this particular species of creature surviving on land and being able to breathe out of the water without dying. The octopus can be seen using the hundreds of suckers along its tentacles to pull itself in the freakiest way along the ground as it hunts down its prey. I cannot imagine seeing this thing on my local beach, and if I did, I would do my best impression of Usain Bolt and get out of there fast.

The Octopus filmed in this footage is just one of the creatures featured in the program. The Hunt looked at some of the most potent hunters in the animal kingdom and included the likes of killer whales, leopards, polar bears and bald eagles. The footage that the crew managed to capture is, quite frankly, amazing, even if it is a little bit weird at times.

Alastair Fothergill, who is the executive producer at Silverback Films, the company who made the program, told the BBC:

"What's really interesting is if you look back at the number of shows that have been made on predators and their prey, almost all of them are red in tooth and claw. 'The bloody predator', you know, these are the villains of the piece and the shows sort of play that card.

"And actually, it's biologically inaccurate. Predators usually fail and they are the hardest animals working in nature. That excites me because I thought: 'Nobody's actually made the predators the heroes; nobody's explained why they are the hardest working animals in nature'. But it's very, very, very much not a bloody show. And what I'm really pleased with is that everybody that's seen it now says: 'No, it's great. There's not a moment where I feel it's a bit bloody.'"

No doubt about it, the octopus video is quite simply stunning and shows a different side to the creature that none of us thought existed. However, the video has also put me off going to the beach anytime soon, so thanks for that.