The Manacles The Manacles The Manacles (, meaning "church stones") () are a set of treacherous rocks off The Lizard peninsula in Cornwall. The rocks are rich in marine wildlife and they are a popular spot for diving due to the many shipwrecks. Traditionally pronounced "mean-a'klz" (1808), the name derives from the Cornish "meyn eglos" (church stones), the top of St Keverne church spire being visible from the area. The rocks are in Falmouth Bay and extends about 1 nautical mile east and south-east of Manacle Point, on the east coast of the Lizard Peninsula. The nearest village is Porthoustock. The reef
Tryal Rocks They are northwest of the Montebello Islands, off the Australian mainland and part of the state of Western Australia. The rocks and the immediate locale are described as: "two coral reefs, close together, about in length NE-SW; the S reef dries 2.7m. The rocks are located about NW of Montebello Islands. Depths of less than 20m lie within SW and NW of Tryal Rocks; the sea breaks on these shallower depths in bad weather. A 5.5m patch lies W of North West Island Light. The channel between Tryal Rocks and Montebello Islands is wide, with depths of 31 to 40m,