Anglais example sentences with "reefs"

Coral reefs attract a variety of beautiful marine life.
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Coral reefs are some of the most amazing natural habitats on Earth.
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Coral reefs are threatened by climate change.
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Climate change could cause the loss of 85% of coral reefs.
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Ocean waters are becoming warmer and more acidic, broadly affecting ocean circulation, chemistry, ecosystems, and marine life. More acidic waters inhibit the formation of shells, skeletons, and coral reefs.
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Warmer waters harm coral reefs and alter the distribution, abundance, and productivity of many marine species.
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Coral reefs are very sensitive to light and temperature. If the water they live in gets too hot, they might not survive.
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The subtidal reefs host a myriad of sponges, anemones and corals, whose presence converts the dark rock to fields of vibrant color.
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Coral reefs are home to millions of species.
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Coral reefs teem with life.
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Many U.S. coral reefs were alive and thriving centuries before the European colonization of the nearby shores.
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Many of the world’s reefs have already been destroyed or severely damaged by water pollution, overfishing and destructive fishing practices, disease, global climate change, and ship groundings. However, we can still protect and preserve our remaining reefs by acting now.
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National marine sanctuaries are protected waters that include habitats such as rocky reefs, kelp forests, deep-sea canyons, and underwater archaeological sites.
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Within national marine sanctuaries's protected waters, giant humpback whales breed and calve their young, temperate reefs flourish, and shipwrecks tell stories of our maritime history.
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There are about twice as many coral species in Pacific Ocean reefs as in Atlantic Ocean reefs.
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In the case of stony or hard corals, these polyp conglomerates grow, die, and endlessly repeat the cycle over time, slowly laying the limestone foundation for coral reefs and giving shape to the familiar corals that reside there. Because of this cycle of growth, death, and regeneration among individual polyps, many coral colonies can live for a very long time.
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This mutual exchange is the reason why coral reefs are the largest structures of biological origin on Earth, and rival old-growth forests in the longevity of their ecological communities.
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Climate change is the single greatest global threat to coral reefs.
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Healthy coral reefs support an amazing diversity of marine life and are often called the rainforests of the sea.
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Once a year, on cues from the lunar cycle and the water temperature, entire colonies of coral reefs simultaneously release their tiny eggs and sperm, called gametes, into the ocean.
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Information gathered by satellites can tell us about ocean bathymetry, sea surface temperature, ocean color, coral reefs, and sea and lake ice.

The Netherlands have a lot to offer in terms of nature: dunes, moorlands, fords, coral reefs, mangrove forests and much more.

This is one of the most beautiful coral reefs in this area.

So far, the coral reef has resisted the effects of climate change bleaching coral reefs around the world. But, experts say visitors are now threatening the reef’s existence.

These islands are linked below the water's surface by coral reefs.

Giant clam harvesting, added to use of cyanide and dynamite bombing for fish, damaged coral reefs last year, the analysts said.

Coral reefs are vital ecosystems that provide shelter and food for marine life.

The coral reefs of Hawaii are a well-known breeding ground for many tropical fish species.

Mr. Wilkinson added that almost half of the reefs severely damaged by coral bleaching in 1998 are recovering, but he said other reefs are so badly damaged that they are unrecognizable.

There's some good news, for a change, in the latest climate forecast from the National Oceanic and Atmospheric Administration. NOAA scientists say the world's threatened coral reefs, which for decades have been bleaching out and dying off because of climate-induced changes in ocean conditions, might be getting a respite this year.

NOAA scientists describe coral reefs as the "rainforests of the sea," noting that these fragile marine ecosystems provide important services such as coastal protection, commercial fish habitats and ecotourism, estimated to be worth as much as $375 billion globally each year. And if predictions are right, the coral reefs will survive, at least for another year, to share these benefits with the world around them.

The new study called Reefs at Risk Revisited is an update of a report first issued in 1998. It makes use of newly-available data and higher-resolution satellite mapping technology. And for the first time, it considers the impact of climate change along with other factors, on these fragile marine organisms.

Coral reefs are essential for coastal protection, and for the food security and economic wellbeing of millions of people around the world. They are an important source of protein, a potential source of pharmaceuticals, and as Lauretta Burke of the World Resources Institute points out, a valuable tourist attraction.

It is the first time the assisted breeding method has been used in Australia, and it follows a successful trial in the Philippines that rejuvenated reefs damaged by fishing.

Oyster reefs harbor huge amounts of life. Scores of plants and animals find food and shelter in their nooks and crannies. As the Bay's reefs wore down, that habitat was lost. Further damage came from increasing runoff from coastal farmland, deforestation and development, which silted over the flatter oyster bars, cutting off the creatures' food and dissolved oxygen. Then, in the mid-1900s came the final assault — a pair of parasites.

To create living reefs, the state of Maryland hired the only shell dredging operation left in the country to dig up old oyster shells mired meters deep under Bay mud and silt.

The Chesapeake Bay is the largest estuary in America — the third largest in the world. A century ago it boasted an oyster fishery second to none. Ships reportedly would run aground on its mountainous oyster reefs. No more. The shellfish population has been devastated by overfishing, pollution and development. But, efforts are underway to rebuild the Bay's oyster reefs.

Kaplan says the low cost recorders can revolutionize how and how often we monitor reefs, and how we determine their health. He says this tool can help gather critical information, regulate boat traffic and even aid in rebuilding the reef ecosystem, by broadcasting sounds that will attract new denizens.

Reefs have long been known as attractors of diverse species. Now, research published in the journal "Science" indicates that reefs are also cradles of evolution, places where new species actually evolve.

Tom went scuba diving to explore the coral reefs.

Pollution destroyed the once-vibrant coral reefs.