Moving Island Optical Illusion @gkourounis
Moving Island Optical Illusion  @gkourounis
Uploaded July 2021 | Updated September 2026, 1 week ago
Turret Rock in the Slingsby Channel, British Columbia.

Here, the Nakwakto Rapids have the strongest tidal current in the world (16-20 knots). Turret Rock is nicknamed "Tremble Island" because it supposedly shakes from the force of the current when the tide shifts from the Pacific Ocean through Seymour Inlet.

There are tales of people tying ropes to the trees on Turret Rock and water-skiing in the rapid current.

I filmed this while on a voyage through the area in July 2021. The perspective of the island, the flow of the water, and my position on a small boat create the illusion that the island is moving through the water.

Copyright: George Kourounis - Furious Earth
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Moving Island Optical Illusion

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