Look up reefing in Wiktionary, the free dictionary. Reefing reduces the area of a sail, usually by folding or rolling one edge of the canvas in on itself...

A reef is a ridge or shoal of rock, coral, or similar relatively stable material lying beneath the surface of a natural body of water. Many reefs result...

A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate...

The Great Barrier Reef is the world's largest coral reef system, composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres...

scarp in South Africa Great Barrier Reef or "The Reef", the planet's largest coral reef The Reef or The Reefs, a former mansion in Newport, Rhode Island, in...

novel written by Romesh Gunesekera Reef (company), an American apparel and shoe company Reef knot, a kind of knot Reefing, an action performed on sails to...

universally used for parcels, rolls and bundles. At sea it is always employed in reefing and furling sails and stopping clothes for drying. But under no circumstances...

attach sails to spars; and reefing features, which may include reefing lines attached to the sail or grommets that have reefing lines running through them...

island subsides, the coral fringing reef becomes a barrier reef that is detached from the island. Eventually, reef and the small coral islets on top of...

The reef triggerfish (Rhinecanthus rectangulus), also known as the rectangular triggerfish, wedgetail triggerfish or by its Hawaiian name humuhumunukunukuāpuaʻa...

brake. Reef Lines, are used to tie-off excess sail, when sails are reefed (shortened). Some modern systems known as "jiffy reefing" or "slab reefing" have...

operation, the mill must be stopped in order to adjust the reefing of the sail. Open Roller reefing sails were invented by Stephen Hooper in 1789. As with...

A reef knoll is a landform that comprises an immense pile of calcareous material that had previously accumulated on an ancient sea floor. Reef knolls are...

An artificial reef (AR) is a human-created freshwater or marine benthic structure. Typically built in areas with a generally featureless bottom to promote...

notable reefs. Fringing reef Recreational dive sites Recreational diving Southeast Asian coral reefs The Structure and Distribution of Coral Reefs Vidal...

Reef, which includes West, Middle and East Islands, in addition to two lagoons, as well as Cartier Reef, which includes Cartier Island. Ashmore Reef covers...

North Reef may refer to: North Reef, Solomon Islands North Reef, Queensland North Reef Light North Reef, Paracel Islands North Reef, Spratly Islands (in...

The Rainbow Reef is a reef in the Somosomo Strait between the Fijian islands of Taveuni and Vanua Levu. It is one of the most famous dive sites in the...

outer edge of the Great Barrier Reef and includes Heralds Beacon Island, Osprey Reef, the Willis Group and fifteen other reef/island groups. Cato Island is...

Sandy Cay Reef is a small coral reef in the northern Thitu Reefs of the Spratly Islands, South China Sea. It consists of multiple shallow reef platforms...

A reef aquarium or reef tank is a marine aquarium that prominently displays live corals and other marine invertebrates as well as fish that play a role...

Capitol Reef National Park is a national park of the United States in south-central Utah. The park is approximately 60 miles (100 km) long on its north–south...

Byramgore Reef, also known as Chereapani Reef (Malayalam: Cheriyapanniyam), is a coral atoll belonging to the Amindivi Subgroup of islands of the Union...

manatee. The Florida Reef is the only living coral barrier reef in the continental United States, and the third-largest coral barrier reef system in the world...

Reef safe is a distinction used in the saltwater aquarium hobby to indicate that a fish or invertebrate is safe to add to a reef aquarium. There is no...

A fringing reef is one of the three main types of coral reef. It is distinguished from the other main types, barrier reefs and atolls, in that it has...

Kingman Reef (/ˈkɪŋmən/) is a largely submerged, uninhabited, triangle-shaped reef, geologically an atoll, 9.0 nmi (20 km) east-west and 4.5 nmi (8 km)...

The blacktip reef shark (Carcharhinus melanopterus) is a species of requiem shark, in the family Carcharhinidae, which can be easily identified by the...

Mischief Reef, also known as Vành Khăn Reef (Vietnamese: Đá Vành Khăn), Meiji Reef (Chinese: 美濟礁/美济礁; pinyin: Měijì Jiāo) or Panganiban Reef (Filipino:...

Blenheim Reef Blenheim Reef is a partly submerged atoll structure in the Chagos Archipelago, Indian Ocean. It includes the coral reef of Baxio Predassa...