An image of what has been described as a 'winged demon' has been uploaded by a user on Facebook.
As many as 20,000 fish and other sea creatures have recently washed up in Canada and nobody knows why.
There have been more sightings of the elusive creature this year than during any other this millennium.
An extremely peculiar creature with a bulbous transparent head has been spotted by a diver in Bali.
Andrey Solovyev has braved freezing temperatures in his quest to locate Siberia's own Loch Ness Monster.
Video footage of a strange snake-like creature covered in ice has recently gone viral on social media.
A video showing an alleged Bigfoot walking in front of a waterfall has been doing the rounds online.
A new campaign has been launched in England in an attempt to track down the elusive 'Humber Monster'.
A mysterious figure has been captured on camera moving around at night outside a gas station in Peru.
An unconvincing video of a bipedal creature in the desert has been doing the rounds online this week.
A recent deep-sea expedition off the coast of California has revealed a rather unusual looking creature.
Arthur Marrin came across a strange creature while traveling in New South Wales over a century ago.
A remote-operated deep-sea exploration vehicle has discovered a peculiar purple orb underneath a rock.
Authorities were notified after a large black creature was spotted chasing deer in North West England.
Multiple witnesses claim to have seen a 'half man half dog' creature known locally as 'Old Stinker'.
Scientists exploring the depths of the Mariana Trench have come across an otherworldly looking creature.
Roquel Bain was struck by a train while seeking a creature that is said to lure people on to the tracks.
Scientists have determined how deep-sea creatures survived the asteroid impact that killed the dinosaurs.
A terrified couple in England have sketched a creature that they encountered while out driving at night.
Strange footage has emerged online this week of a large, dark shape surfacing in the River Thames.