Down by the (green) riverside...
Nature lovers were startled when they recently went down to the river in Goldstream Provincial Park in Vancouver Island, Canada.
For some reason, the water had turned fluorescent green.
The mysterious colouring lasted for about an hour, flowing down into the environmentally sensitive estuary.
Green green grass... and water: This river in Goldstream Provincial Park, Vancouver Island, Canada turned a mysterious colour for an hour before returning to normal
And then the river, known for its dramatic salmon runs, eagles and other wildlife, was back to its normal colour.
Ministry of Environment teams have begun an investigation and samples have been collected for analysis.
No dead fish or animals have yet been found.
Although not yet confirmed, the authorities believe it was a prank carried out using water-testing dye.
