Thousands of jellyfish have ‘invaded’ Ilfracombe harbour.

This video posted by Ilfracombe Chocolate Emporium on Facebook shows thousands of jellyfish in the harbour area.

Sarah Cox took these photos of the bloom of jellyfish in Ilfracombe Harbour. Sarah Cox took these photos of the bloom of jellyfish in Ilfracombe Harbour.

They formed purple blooms in the water, causing quite a spectacle.

The jellyfish at Ilfracombe are Aurelia aurita, known commonly as Moon Jellyfish.

They are transparent and recognisable by the four distinct purple rings in the bell of the creature.

They have four short arms on their underside and can have a mild sting.

Sarah Cox took these photos of the bloom of jellyfish in Ilfracombe Harbour. Sarah Cox took these photos of the bloom of jellyfish in Ilfracombe Harbour.

Jellyfish strandings occur because the creatures are not strong swimmers - they float with the currents, and often end up ashore.

According to beachstuff.uk, which reports on beach strandings, there have been many jellyfish reported around the South West.

Sarah Cox took these photos of the bloom of jellyfish in Ilfracombe Harbour. Sarah Cox took these photos of the bloom of jellyfish in Ilfracombe Harbour.

It said: “Jellyfish in their hundreds and thousands are being reported washed up on our Welsh and South West English coast beaches.

“These largely clear jellyfish with visible pink rings are Moon Jellyfish, also called Common Jellyfish.

“They are not known to be stingers - the main danger they pose is making some of the beach incredibly slippery.”

There has also been some trouble reported with the jellyfish being sucked into boat engines as they attempt to leave the harbour.

Have you spotted any jellyfish in North Devon? Send your photos and videos to newsdesk@northdevongazette.co.uk