Coastal ponds are usually separated from the sea by a sand dune a few metres high.

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The islands are isolated from their environment by an impermeable membrane which is laid all across the island, which makes it completely separated from the sea and the seabed.

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One particularly scenic spot is the Piscinas de la Fajana near the town of Barlovento, where you can take a dip in natural pools of saltwater separated from the sea only by low man-made barriers.

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The Apple, Google, and Facebook campuses are low-rise office buildings surrounded by a sea of parking and separated from each other by limited-access freeways.

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Mountains need to be higher than 1, 100m above sea level and be separated from other mountains by a drop of at least 150m on all sides.

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We were surrounded by nothing but sea in all directions, seemingly as separated from the rest of the world as people could possibly be.

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Nan Madol comprises a set of almost 100 stone and coral fill platforms or artificial islets separated by narrow channels and enclosed by an outer sea wall.

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He realized that nearly 50 people were on the ice that had become separated from the shore and being blown out to sea by the prevailing wind.

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Kaliningrad is geographically separated from mainland Russia and is wedged between Poland and Lithuania on the Baltic Sea.

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Barrier reef: a coral reef separated from the land by a large lagoon or, in some cases, by several kilometres of open sea.

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