Puffin Island (Anglesey)

Puffin Island
Native name: Ynys Seiriol
	Puffin Island seen from Penmon Point
	Puffin Island
Geography
Location	Anglesey, Wales
Coordinates	53°19′00″N 4°01′00″W / 53.31667°N 4.01667°W
Administration
	Wales
County	Anglesey
Demographics
Population	0 (uninhabited)

Puffin Island (Welsh: Ynys Seiriol) is an uninhabited island off the eastern tip of Anglesey, Wales. It was formerly known as Priestholm in English (and Ynys Lannog/Glannog in Welsh). A hermitage was established here around the 6th century, and there are remains of a 12th-century monastery on the island. The island is also a Special Protection Area for wildlife.