Patches of bright orange water have appeared on Douglas Promenade, but what it and is it harmful?

Residents walking along Douglas Promenade may have noticed patches of orange-coloured water while walking along the sea wall.

The unusual sight was caused by an algae bloom of Noctiluca scintillans, a microscopic marine organism more commonly known as “sea sparkle” or the “fire of the sea”.

The bloom was first reported in Douglas Bay earlier this month, and is expected to gradually fade over the coming days.