A mysterious object has been spotted in waters near Liverpool in England's northwest, sparking speculation it could be a shark.
The object, seen at the Albert dock in Merseyside, has raised questions about the effect England's freezing waters are having on marine biology.
Some experts have said it could be a basking shark while others have said it could simply be a jetski.
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Marine biologist Tom Cornell said basking sharks were known to cruise around the coast and that they weren't a threat to humans.
"Although it is unusual for tropical island sharks to be found in this area, it’s not unheard of," Mr Cornell said.
Radio DJ Simon Hoban spotted the creature while viewing an aerial shot of the maritime tourist spot on Google Earth.
The image appears to show some sort of sea creature with a curved body, pointed snout and pectoral fins on either side of its body.
The Daily Mail reported that the creature was larger than some of the boats which are lined up beside it.
Mr Cornwell suggested the animal may be lost.
"Perhaps it was an old shark which was looking for a place to die," he said.
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