The rainbow of life in a coral reef is founded on the partnership between polyps and algae.
After this we pulled straight out to sea and landed on the coral reef.
We had gone southward, having got a full ship, when we struck on a coral reef.
Once they were beached on a coral reef, and it was all they could do to get the boat off again into deep water.
No; we are on a coral reef, and our chances of escape are very small.
It may be carried thousands of miles away to help in building up a coral reef (what that is I must tell you afterwards).
After this we pulled straight out to sea, and landed on the coral reef.
In short, we were wrecked on the coral reef surrounding it, and the Saginaw is no more.
There is a coral reef nearly all the way from Africa to beyond Ras Momi.
I went on to say that the accident had arisen simply from the existence of a coral reef which nobody had thus far suspected.
|coral reef |
A mound or ridge of living coral, coral skeletons, and calcium carbonate deposits from other organisms such as calcareous algae, mollusks, and protozoans. Most coral reefs form in warm, shallow sea waters and rise to or near the surface, generally in the form of a barrier reef, fringing reef, or atoll. Coral reefs grow upward from the sea floor as the polyps of new corals cement themselves to the skeletons of those below and in turn provide support for algae and other organisms whose secretions serve to bind the skeletons together. The resulting structure provides a critical habitat for a wide variety of fish and marine invertebrates. Coral reefs also protect shores against erosion by causing large waves to break and lose some of their force before reaching land. The Great Barrier Reef off the northeastern coast of Australia extends for some 2,000 km (1,240 mi), making it the world's largest coral reef.
A formation, at or near the surface of tropical waters, formed by skeletal deposits of corals, a form of sea life.
Note: Coral reefs form a protective environment for a wide variety of marine animals.
Note: Atolls — ring-shaped islands that nearly or entirely enclose a lagoon — are coral reefs.
Note: The largest coral reef is the Great Barrier Reef of Australia.
Note: Coral reefs are very sensitive to chemical pollution and changes in temperature and are considered to be in danger from environmental stress.