Here ’s something you certainly would n’t expect to see while walking along a beach in the UK : a colossal zombified sea turtleneck .

Richard Pears and James Mustoe , along with James ’s children Barnaby and Reuben , were repay from a wildlife observe head trip off the   coast of Polkerris in Cornwall when they noticed something scupper in the waters ahead .

“ We take in this matter be adrift in the water from a way off and did n’t have a clue what it could be , ” Mustoe tell IFLScience .

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After getting a little closer to the mystery object , they realized that   it was really the eubstance of a decomposing leatherback polo-neck .

“ I was stun   – it was shocking , " Mustoe said .

“ When we realized what it was , it was very sad but also assure something that uncommon and that size just bobbing in the sea like that must be a once in a lifetime encounter . I told my fry it would be something they could tell their grandchild about in year to come . ”

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The turtle   was described as " the size of a small boat " . This Brobdingnagian size of it indicate that the turtle could have been up to 100 years erstwhile when it snuff it .

Leatherbacks run to hang out and nest on arenaceous beaches near tropic and semitropic sea , however , they do have a far - reaching spheric range of mountains that spans across vast wrapping of the Atlantic , Eastern Pacific , and Western Pacific Oceans . Nevertheless , spotting a specimen like this on the south coast of the UK is almost unheard of .

“ Dermochelys coriacea are within UK water , they just get on with living out at ocean , ” Three Bays Wildlife Group , a local wildlife radical involved with the   scientific examination of the wildcat , told IFLScience .

“ They do stretch up the east side of the Atlantic past [ the ] UK . Indeed , another deadened one washed up at Marazion 12 day ago , one was cut free from potbelly ropes in St Austell embayment a couple of weeks ago , and a champion was out sail and saw one swimming off . ”

Leatherback turtles ( Dermochelys coriacea ) are listed as " vulnerable " on theIUCN Red List .   The global population is made up of seven subpopulations dotted across the world . Although some subpopulations are actually on the rise thanks to conservation plan , the general population is declining .   Their many threats include defilement , coastal development , being accidentally caught by fisherman , and mood alteration .