You'll need to provide these items together with your application for a Mauritania visa:

• A passport is valid for six months after your anticipated return date. It is required that at least two pages be blank in the passport.
• Photograph according to the specifications for the Mauritania visa.
• Application for a visa to enter Mauritania duly filled out and signed.
• Proof that you paid the visa application cost.
• A hotel reservation, a lease, or an invitation letter are documents that prove you have somewhere to stay.
• Formal invitation letter. Someone you know in Mauritania may write you an invitation letter.
• A record of criminal activity that the authorities have officially recognized in your own country.
• Medical coverage that is valid in Mauritania.
• This must be a bank statement proving that you have sufficient funds to support yourself in Mauritania.
• Evidence of paternity; the birth certificate (if applicable).
• Official proof of marriage (if applicable).