Retired history teacher David Gould took nearly 2, 000 ninth-graders over the years on retreats to Turtle Island from Durham Academy, a prep school.

WSJ: Ah, Wilderness! Mountain Man vs. the Building Inspector

The animal weighed more than 900kg (2, 000lbs) and, at 100 years old, it was the oldest recorded turtle as well as the largest.

BBC: NEWS | UK | Wales | Mystery of Wales turtle 'solved'