This is the dramatic moment a whirlpool appears in a fast-moving river after torrential rain battered central Vietnam.

Footage shows the powerful swirling funnel dragging debris along the riverbank in the coastal city of Da Nang.

Days of intense downpours and a series of landslides have struck the region, killing seven people and leaving another seven unaccounted for.

In Khanh Hoa Province, rain-fuelled landslides claimed seven lives, while two others remained missing. A separate rockslide in Da Nang City left three residents unaccounted for.

A whirlpool forms when fast-moving water meets opposing currents or sudden drops in flow, creating a spinning vortex that can pull objects toward its centre.