Mers-les-Bains is a commune in the Somme department in Hauts-de-France in northern France.

• A Calvary, in stone, of St. Maximin, adorned by 4 gargoyles.
• Notre-Dame statue on the cliffs.

Mers-les-Bains has suffered from flooding on a regular basis. The army has been often been deployed with sandbags to stem the flow. A more permanent barrier is now being created for the three towns, at a projected cost of 13 million euros. This involves large rocks,

• Communes of the Somme department

Mers-les-Bains’ does not have much history. There are one or two noble families known to have been seigneurs of places within the commune; The coat-of-arms, carved in stone, of the Mython family of Froideville adorns one of the Mayor's offices today. The

• Eugène Dabit author of the novel (Hôtel du Nord) was born in Mers-les-Bains
• Antoine Vollon, artist, (b. Lyon 1833 – d. Paris 1900) lived here for many years with his son, Alexis (1865–1940)

Both herring gulls and black-headed gulls are found in abundance, along with kestrels, in the air on the lookout for prey. This will include mussels, various crabs, shrimps