Whirlpool

The vortex - a circular movement in the surface water layer, developing portions of the reservoirs or run-of-river flows as a result of the merger of two currents in the flow over the ledges of the shore, the sudden expansion channel.

In rivers of large size (tens to hundreds of metres) sections with the rotational movement of the water called zavodami.

Sea swirls are caused by collisions and tidal flats waves and counter-currents.

The movement of water in whirlpools can reach very high speeds. The horizontal dimensions vary from several centimeters to several kilometers (in open ocean).

They can cause a shipwreck. Able to "drag" people to the bottom.

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