In Thailand, "The belief is that throwing coins into the turtle pond will make the coin-thrower live longer,"
They say tossing a coin into a fountain will bring you good luck - but it was quite the opposite for a sea turtle which had to have 915 coins removed from its stomach.
The array of currencies eventually formed a heavy ball in her belly weighing 5kg (11lbs) and eventually cracked her shell, causing a life-threatening infection.
A 3D scan revealed she had two fish hooks inside her, which were also removed.
Omsin underwent a gruelling seven-hour operation as specialist veterinary surgeons removed a few coins at a time.
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"I felt angry that humans, whether or not they meant to do it or if they did it without thinking, had caused harm to this turtle," she said.
A public appeal raised around 15,000 baht (£347) in donations to pay for the surgery.
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Omsin has been put on a liquid diet while she recovers at the university's animal hospital.
A green sea turtle can live up to 80 years and is listed as an endangered species by the International Union for Conservation of Nature
A green sea turtle can live up to 80 years and is listed as an endangered species by the International Union for Conservation of Nature