Jack Sound

Middleholm, also known as Midland Isle, is a small island lying off southwest Pembrokeshire in Wales, between the island of Skomer and the mainland in the community of Marloes and St Brides. It is roughly circular with a diameter of about 1,210 feet (370 m) and an area of 21.5 acres (8.7 ha). It is separated from the mainland by Jack Sound and from Skomer by Little Sound.

Martin's Haven is a small, north-facing cove in Pembrokeshire, Wales, UK, on the Dale Peninsula, with views across St Bride's Bay towards St David's. It is recorded by the Royal Commission as a historic place name.

Skomer Marine Conservation Zone is an underwater marine nature reserve located off the coast of Pembrokeshire in Wales. The nature reserve completely surrounds the islands of Skomer and Middleholm, and encompasses the mainland coastline around the end of the Marloes peninsula, including the small bay of Martin's Haven. The sea bed and rocky shelves of the island are teeming with life. Common eelgrass, Zostera marina, one of the very few plants that flower underwater, grows on beds of sand and gravel in sheltered waters and its long, grass-like leaves form underwater lawns that provide food and shelter for other plants and animals. Species of lobsters, crabs and other crustaceans abound, and grey seals give birth on the coast in October and November.

Gateholm or Gateholm Island is a small tidal island off the south west coast of Pembrokeshire, in the community of Marloes and St Brides, in the south west side of Wales, in the west of the UK, and about 8 miles (13 km) west of the port of Milford Haven. It is known for its Romano-British remains. Gateholm is owned by the National Trust as part of their Marloes Sands and Mere estate.

Skomer (Welsh: Ynys Sgomer) or Skomer Island is an island off the coast of Pembrokeshire, in the community of Marloes and St Brides in west Wales. It is well known for its wildlife: around half the world's population of Manx shearwaters nest on the island, the Atlantic puffin colony is the largest in southern Britain, and the Skomer vole (a subspecies of the bank vole) is unique to the island. Skomer is a national nature reserve, a Site of Special Scientific Interest and a Special Protection Area. It is surrounded by a marine nature reserve and is managed by the Wildlife Trust of South and West Wales. Skomer is known for its archaeological interest: stone circles, standing stone and remains of prehistoric houses. Much of the island has been designated an ancient monument.

Marloes Mere is a wetland in Pembrokeshire, South Wales. It has been designated as a Site of Special Scientific Interest since November 1985 in an attempt to protect its fragile biological elements. The site has an area of 17.17 hectares (42.4 acres) and is managed by Natural Resources Wales.

Skokholm (Welsh: Ynys Sgogwm) or Skokholm Island is an island 2.5 miles (4.0 km) off the coast of Pembrokeshire, Wales, south of the neighbouring island of Skomer. The surrounding waters are a marine reserve and all are part of the Pembrokeshire Coast National Park. Both islands are listed as Sites of Special Scientific Interest.

Skokholm Lighthouse is a lighthouse on Skokholm Island, just off the southwest coast of Pembrokeshire, Wales. This small island is a Site of Special Scientific Interest. It is owned and managed by the Wildlife Trust of South and West Wales and is the site of the United Kingdom's first bird observatory. A great variety of birds can be found on this uninhabited island.

Marloes Sands (Welsh: Traeth Marloes) is an approx. 1.5 kilometres (0.93 mi) long remote sandy beach in Pembrokeshire, Wales, near the village of Marloes. It's broadly curved and surrounded by cliffs. Walking on the beach gives great views of Skokholm Island and Gateholm Island.

St Brides Castle is a 19th-century castellated baronial-style mansion in the parish of St Brides and the community of Marloes and St Brides, Pembrokeshire, southwest Wales.

Marloes is a village and parish in Pembrokeshire, Wales, on the Marloes Peninsula 7 miles (11 km) west of Milford Haven and forms the western tip of the southern shore of St Brides Bay. It is within part of the Pembrokeshire Coast National Park. The parish has 6 miles (9.7 km) of mainland coastline accessible throughout by the Pembrokeshire Coast Path and, together with St Brides, constitutes the community of Marloes and St Brides. In 2001, the population was 323.

Royal Naval Air Station Dale (RNAS Dale, also known as HMS Goldcrest) is a former Royal Navy Naval Air Station, located 10 miles (16 km) South West of Haverfordwest in Pembrokeshire, Wales. It was operational between 1942 and 1948, being used by both the Royal Air Force (1942–1943) and the Royal Navy (1943–1948). The village of Dale in Pembrokeshire is situated 0.5 miles (0.80 km) south-east of the airfield, which itself lies adjacent to the coast, 2 miles (3.2 km) north of St. Ann's Head, the western entrance to the Milford Haven waterway. The town of Milford Haven lies 5 miles (8 km) east and Pembroke Dock lies 11 miles south-east. Notable landmarks are St. Anne's Head and Milford Haven, with Skomer Island lying 3.5 miles (5.6 km) north-west and the small island of Skokholm lying 2.5 miles (4 km) south-west.