Why Is NASA Tracking Seaweed From Space?

Click image to view movie. Credit: NASA

Something strange has been happening to the beaches across the Caribbean in recent years.

Large amounts of a brown seaweed – called Sargassum – have been washing up on shorelines. In the open ocean, Sargassum is essential habitat, but can cause a whole host of issues when it washes up on Caribbean coastlines.

So where is this seaweed coming from? And how is NASA tracking it?

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