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Blue Tears(Blue Sand)

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What are blue tears?

“Blue tears” ,“blue seas”,"blue sand" or “blue beer seas” refer to a kind of phenomenon created by ostracodes— or pyrrhophyta. Scientists have yet been able to identify the creatures that result in this natural wonder. But it is certain that the little creatures emit light-blue fluorescent lights when they are disturbed by ocean waves. They give the ocean a blue sheen when there are a large number of them. The people of Matsu call this “blue-backed sprat water,” because the fish like to come and eat these little ones. Last year, soon after blue tears appeared in Nangan and Beigan, fishermen caught a large quantity of blue-backed sprat in Beigan. The fishermen don’t see the blue tears as something extraordinary, however. They are quite used to it.

When do the blue tears appear?

For blue tears to appear, there must be strong southern winds. Only in this way will the disturbed creatures emit blue light. The phenomenon is most likely to happen in April and May. We cannot guarantee that you are sure to find the blue tears when you are here, because this is a natural phenomenon.

“Star sands” and blue tears

As you walk through “star sands,” you shall notice that you are leaving light-blue footprints behind. The light actually comes from the frightened little creatures washed ashore by waves. But the light is so dim that it is hard to take photos of it – only the human eyes can observe it. Try long exposure and see if you can successfully take a picture of the star sands.

We recommend the following places for you to enjoy the star sands: Fuzheng Beach and Mengao Port in Dongju; Qiaozi, Qinbi Beach and Tanghoudao Beach in Beigan; and Jinsha Beach in Nangan.

Again, because blue tears are a natural phenomenon, we cannot guarantee that you are sure to find them when you are in Matsu. Please also stay safe as you look for them – it is recommended to hire a local guide or see if the B&B you stay with offers such a tour.

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How to Take Good Photos of the Blue Tears

Use bulb for long exposure and lower the color temperature of white balance for an amazing visual effect.

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Tears in blue Movie