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On the Atlantic coast of the United States the edge of the continent gradually
slopes downward underwater along what is known as the continental shelf. At a
point called the continental slope, this shelf drops sharply downward to the sea
Santa Cruz Island, a continental island, was once part of the California mainland.
Still other islands form when they break away from the continent and move slowly
away from it on a tectonic plate. The distance between the island and continent ...
Includes anemones, jellyfish, corals, and hydroids. commensalism — A symbiotic
relationship between organisms of different species in which one benefits and
the other neither benefits nor suffers. continental shelf — The portion of the sea ...
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