What causes surface ocean currents to be deflected?

The Coriolis effect causes surface ocean to be deflected.

Explanation:

The Coriolis effect causes ocean currents to be deflected.

Choriolis effect (named after its discoverer Gaspard Coriolis), is the tendency that any body in motion on the Earth's surface has to change its course due to the rotational direction and the speed of the Earth.

In the northern hemisphere, the attraction is clockwise (to the right) and in the southern hemisphere, the attraction is in the reverse (counterclockwise).

This effect also affects sea currents as the water (liquid) undergoes deformations.

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explanation:

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: