- 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...
- 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...
-
Scorpion Reef (Spanish:
Arrecife Alacranes) is an
atoll containing a
small group of
islets in the Gulf of Mexico,
about 125
kilometres (78 mi; 67 NM) off...
- Look up
reef in Wiktionary, the free dictionary. A
reef is a bar of rock, sand,
coral or
similar material,
lying beneath the
surface of water.
Reef may also...
-
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...
-
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)...
-
Cherbaniani Reef, also
known as
Beleapani Reef (Malayalam: Valiyapanniyam), is a
coral atoll belonging to the
Amindivi Subgroup of
islands of the Union...