Why is there no plankton in the Caribbean?

Because the tropics have warm surface water, even in the winter, the thermocline never goes away, and the nutrients stay trapped down below in the depths. So even with ample sunlight, phytoplankton growth is severly limited. In the tropics, predators like coral make good use of what little plankton there is.



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White sand, no silt and shallow water are the main reasons for the pale blue/green colour of the carribean waters. The areas that have the cleanest, clearest waters are regions where the islands are surrounded by coral reefs, the white sand is coral debris and fragments of sea shell.

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Atlantic deep water is thought to spill into the Caribbean and contribute to the general deep water of its sea.

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The Weddell Sea has been claimed by scientists to have the clearest waters of any ocean in the world. Described by a historian as “the most wretched and dismal region on earth”, due to the flash freezes that caught Shackleton's ship, its clarity is only belied by the sheer depth of the ocean below.

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The Atlantic Ocean enters the Mediterranean Sea through the narrow Gibraltar Strait. As a result, the Mediterranean Sea has almost no tides, which means that coastline construction has historically been situated very close to the water—closer than in other coastal countries directly exposed to the daily ocean tides.

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While there are a few places that boast extremely clean water, such as Canada, Iceland, Antarctica, or even Upstate New York, the team of scientists determined that the cleanest water in the world was in the Patagonia region of Chile, Puerto Williams.

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With some of the world's best islands, it's no surprise that the Maldives is a favorite destination for travelers who want to be surrounded by the clearest water in the world.

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While most of the republics have both a Caribbean and a Pacific coastline, Belize has only a Caribbean coast, and El Salvador has only a Pacific coast. Central America includes the countries south of Mexico through Panama.

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