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Incredible sea sparkle pictures in Swansea
Image source, ALYN WALLACE
No, it's not magic, the sea really is glowing!
These incredible pictures were taken by photographer Alyn Wallace on a beach in Swansea, Wales.
They show a special type of glow-in-the-dark algae called Noctiluca scintillans - also known as 'sea sparkle'.
By day the algae appears a pinky-red colour, but by night it becomes a magical blue.
Image source, ALYN WALLACE
The reasons the algae glows is because it reacts to movement nearby to it.
Sea sparkle usually prefers warmer more tropical waters, so this was a rare sighting.