A video has emerged of hundreds of tiny spiders roaming around a bio-filter in Thornton-Cleveleys, UK, on June 1.

"The video was filmed in a odour cleaning Bio-filter, the Biofiler is constantly above 20 Degrees and is irrigated every hour and full of peat," the filmer wrote online.

"The whole area is very humid a place where the tiny spiders have thrived".