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yes they do
Great Barrier Reef ; see related link below .
Cone snails live in predatory gastropods that inhabit mostly mud, sand flats shallow reef waters where the low and the high tides alternate.
No. Sand is a category of sediment. You can, however, have landforms that are made of sand such as barrier islands and sand dunes.
sea slugs live under the sand at the bottom of the ocean so people very rareley see them.
The Mesoamerican Barrier Reef is the second largest in the world, and it passes through Mexico, Belize, and Honduras. The SECOND largest coral reef is located in the Yucatan waters near Mexico.In the early 1980s, the pristine, beach-girdled Caribbean coast of Mexico's Yucatan peninsula was marked by little more than a few fishing villages. There was a hotel here and a hammock there, but not much of an effort to identify their position, nor much infrastructure to support them.But just as it did for Cancún in the early 1970s, Mexico's government tourism development agency decided to put a name to this beautiful face, and the Riviera Maya was born. And soon enough, a highway was built parallel to the coast, linking these sun-drenched towns and villages to the Cancúnairport.Sure, the name rings of romanticized marketing conceit, but Riviera Maya is indeed an ideal description of the magic carpet of sand that unrolls virtually unbroken for 81 miles south of Cancún.The Riviera Maya starts in Puerto Morelos, one of the coast's last genuine fishing villages, 12 miles south of the Cancúnairport. The beach here is not as impressive as those deeper into the region -- the salt-and-pepper shoreline doesn't glisten quite as brightly, and less-than translucent seas have a blanket of turtle grass underfoot.But there are advantages to being based in Puerto Morelos. Your airport transfer is barely 20 minutes, and he proximity of Cancún makes an evening out on the town a realistic option. Nightlife in laid-back Puerto Morelos may be a tad scruffy, but it's fun for an evening or two. Better still, the barrier reef -- the world's second-longest -- lies less than a mile offshore and it's a designated marine reserve along this section of Riviera Maya. The beaches are quiet and uncrowded.
The reefs require adequate amount of sunlight. They grow only in shallow and clean water. A reef can be made of any of the three substances - sand, rock or coral. The temperature that is conducive for the formation of reefs is between 18 degree Celsius and 30 degree Celsius. The sea animals called polyps form colonies that make the reefs. A coral polyp resembles a sea anemone. This animal has many tentacles around its mouth. Many polyps join together to form a colony. The Barrier Reef is made of many coral reefs. Each coral polyp is associated with an alga. The photosynthesis by an alga helps the polyp to make a coral skeleton. The skeletons are made of aragonite, a form of calcium carbonate. These coral skeletons form quickly and are the foundation on which coral reefs are built. Two coral skeletons are sealed together by calcium carbonate produced by algae. Thus the reefs including the Great Barrier Reef are formed due to the association between a sea animal and a single-celled plant.
Yes, on the bottom.
Sand and rock.
sand dunes,sand bars , sand spits and barrier islands
Two animals that I know live on the sand of a Coral Reef are a Jawfish and Garden Eel, but there is guaranteed to be many more.
Sand Spit: A sand spit is an elongated line of sand that usually extends parallel to shore. Barrier Islands: Barrier Islands are long,narrow coastal island.