HMS Scylla

HMS Scylla is an artificial diving reef lying upright on a sandy seabed in Whitsand Bay, South Cornwall, at coordinates 50°19.665 N, 004°15.162 W. She was the last Royal Navy Leander-class frigate built at Devonport Dockyard, launched in 1968 and decommissioned in 1993. On 27 March 2004 the National Marine Aquarium in Plymouth, with funding from the South West of England Regional Development Agency, placed her on the seabed to create Europe's first purpose-built artificial diving reef. Before deployment her superstructure was removed and holes were cut into the hull sides so divers can look into the internal compartments.

The wreck sits upright with a maximum depth of 23 m to the sandy bottom and a shallowest point of around 9 m. She measures 113 m long and 13 m wide, offering considerable vertical and horizontal range for exploration at all levels of the hull.

The Scylla is well colonised by sedentary life and supports a wide variety of species. Sea fans became established by 2007. Other life includes deadmen's fingers, tube worms, bib, pollack, cod, wrasse, congers, and cuttlefish, making the wreck a productive site for underwater photography and natural history observation.