It was the last hour of the last day of Peter Smith's holiday in Tobago when he decided to take a dip in the sea.
"The conditions were perfect for a swim," the retired IT director recalls. "I dived into the waves, swam out no more than 20 feet (6m), and stood waist-deep in the water."
He and his wife Joanna, from Hertfordshire, were away with friends, and the last thing on their minds was the risk of shark attacks - they are unheard of on this tiny Caribbean island.
"Suddenly I felt a very heavy object hit my leg. I look down and there's a shark - and it's big," Peter says.
"You're talking maybe 10 foot (3m). That's when your brain works at 1,000 miles an hour."
