A woman was repulsed to find this hybrid-looking creature crawling around her porch.
The mystery creature, which resembles both a rat and a maggot, was caught wrigging against Bex Deen's skirting board at her Southampton home.
The strange five-inch long specimen resembles a sausage with a long thin tail and it has baffled social media users across the country.
A fierce debate erupted online when Bex posted footage of the alien-like creature.
The strange specimen is believed to be a larger than normal rat-tailed maggot, which will eventually turn into a drone fly.
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The woman described it as moving like a worm but much larger in size, with a long, thin tail but without a face or legs.
Her friends were quick to offer their insight into what they believe the creature could be.
One said: "That thing is absolutely gross! I've never seen something so disgusting! OMG get rid of that please."
Others could barely look at the video, which they said: "creeped them out".
Some people even thought the creature was an alien.
Rat-tailed maggots are often less than an inch long but the tail can be as long as six inches when completely extended.
These are the immature stage of flies that resemble honey bees.
When the maggot is submerged underwater, it is used as a breathing tube as it does not have gills.
Rat-tailed maggots tend to be found in stagnant water such as manure pits and lagoons.
They become a nuisance when they move away from their breeding ground to find a dry place, which is when they begin to transform into the adult stage.
