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A Barrier Reef. The barrier reefs grow parallel to the shore of an island and are separated from it by a deep lagoon.
Coral Reefs... Hope that help ^^
These are the ridges or mounds in shallow sea derived from some stony corals (A type of marine animals belonging to phylum Cnedaria) these reefs are easily navigable that is ships can enter in these reefs there are still other types of reefs also as barrier reefs and atolls which are not navigable.
coral reefs
no they dont live in beaches they live in the ocean, there can be close to shore or be way off shore or they can be in the middle of the ocean.
beach
np
Lagoon
longshore drift
Fringing reefs are reefs that are usually found close to the shore of continents or around islands and forms as a long bar attached to the land. The Great Barrier Reef is an example of this.
longshore current
A 'sand bar'.