Ebb and Flow
The phenomenon of the rise or fall ocean water is called ebb and flow, occurs two times in one day. The causes ebb and flow is the interaction of the three sources are: the rotation of the Earth, the Sun and the Moon.
Fisherman waiting when tides (heightened ocean water) to go fishing in the sea, and vice versa back when high tide happened. Generally, the fishermen know the schedule happened ebb and flow.
My take two photos when the ebb and flow on the beach Lhokseumawe City, Aceh, Sumatra, using smartphone cameras Sony C6903.
To know the state of ebb and flow every day at the beach Lhokseumawe City, HERE.

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Beautiful scenery. I like the pictures.