<p>What in the phytoplankton!&nbsp;Water off the shores of LI&nbsp;looking Caribbean blue this time of year. NewsdayTV&#39;s meterologist Geoff Bansen explains&nbsp;this&nbsp;phenomenon.</p>


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Why water off LI shores looks Caribbean blue this time of year

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'This happened two years ago as well, and it seems to be happening with increasing frequency'

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