Reefing is the process by which a sailboat reduces it's sail during windy conditions. Usually, the sail is either gathered in and tied to the boom, or it can be rolled in on sailboats that are so equipped. In particularly windy conditions, it may be necessary to use a double reef to further reduce sail. I'm not sure about "second reefs," but I would assume that it's the same as a double reef.
coral reefs start by the decomposition of organisms living under water.
One bajillion
they live in ... the under water
Coral reefs and hydrothermal vents are similar because they both lie below the under water.
a lionfishes shelter is under his habitat, which is the coral reefs!
Preserved coral reefs that have turned into sedimentary rocks are classified as biogenic sedimentary rocks.
Octopuses mostly live in or around coral reefs, under the sea.
Im guessing none considering they are under water...
Crystals and pure or uncut Diamonds and coral reefs.
wath the essential terms under tourism
i'm asking i don't know what's the answer
the fish will have no live and we have no beautiful coral reefs under the water or at the sea