The severed hand was complete with a wedding ring and is believed to belong to a British tourist who was reported missing. The horrifying find was made by forensic scientists near the island in the Indian Ocean.
The shark was allegedly killed because it was considered a threat to holidaymakers.
The scientists also carried out various autopsies on five fish caught around the waters of the French overseas territories.
It is believed that the hand belongs to a 44-year-old man from Scotland.
The man was believed to be holidaying in the area with his wife.
A source investigating the attack on the man said: “It is feared that the hand belonged to a tourist who was reported missing on Saturday afternoon by his wife.
“The tourist and his wife were spending a week on the island and he had gone out swimming in the Hermitage Lagoon, off Saint-Gilles, alone on Saturday.
“When he did not get back, his wife sounded the alarm, and a full search was launched, involving boats and a helicopter.
“Divers searched around a coral reef in the area, and there were also patrols on land involving sniffer dogs. Sadly, the man could not be found.”
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Great white sharks are most likely to attack humans.
However, the man could have drowned before he was eaten, meaning that his corpse attracted the fish.
DNA tests will be carried out on the severed hand in the next few days.
Scientists from the CSR Shark Safety Centre on Reunion Island have been told that the wedding ring found on the hand “conformed to one identified by the man’s wife”, according to a source.
The dead Tiger Shark was more than 10ft long and was one of five sharks which is considered to be a threat to those in the sea.
It comes as a number of dead great white sharks have washed up on the coast of False Bay, South Africa which show the telltale signs of a monster killer, according to The Times
Researchers have concluded that killer whales, also known as orcas, have disrupted the natural hierarchy and are now killing great white sharks.
Two particular killer whales are thought to be responsible for hunting the great white sharks.
Tourists are now hoping to see the killer whales which are thought to be brothers called Port and Starboard.
The two killer whales have also been branded “super predators”.