Incredible footage has shown bizarre-looking sea creatures washing up on a beach – and they could be worth a fortune.
Martyn Green and his family were on a weekend away near Caernarfon in North Wales when they stumbled across what seemed to be a large piece of driftwood.
But on closer inspection, he discovered thousands of tentacled creatures had attached themselves to the log.
In his video, the creepy creatures can be seen poking in and out of their shells. The nightmarish scenes would not look out of place in an Alien movie.
Martyn, from New Brighton, Merseyside, has since told the Liverpool Echo that he has never seen such a sight.
He said: "My wife Gemma, she found it. We were walking on the beach and she called us and said 'come back, look at this'.
"We went and had a look and it looked like something not of this world.
"It was quite an attraction for the locals."
The 47-year-old and his son Daniel searched for answers and discovered they were Gooseneck Barnacles.
The rare specimens are considered a delicacy in countries such as Portugal and Spain.
He said: "It turns out they are one of the most expensive sea creatures you can buy.
"From looking on Google I think it's about £25 each they go for, and on the log there were probably about 2,000 of them."
If that were the case, the barnacles would fetch a total of £50,000.
Martyn, who runs a marketing agency, did not want to reveal the exact location of his unusual find to avoid people flocking to the scene.
The barnacles can reach up to €360 (£322) a kilo in peak season.