The annual festival, which takes place in the city of Dunkirk, northern France kicked off on Sunday with an estimated 40,000 revellers taking to the streets.
The carnival is known for its colourful vibe, with locals and tourists alike taking the chance to dress up and march, dance, and sing.
Many people wear yellow fishermen's coats, as the tradition dates back to when local fishermen would feast before heading off to sea. Documents suggest the carnival has origins as far back as 1676.
The march is capped off by the crowd chanting that they want the "herring they deserve", and 450 kilos of herring is then thrown to the crowd from the balcony of the Town Hall.
Only in France, you might say.
Take a look at some of the colourful characters from the festivities:
(Another reveller. Photo: AFP)