sea – la mer
(Pronounced mair)
To remember that sea is pronounced mair (mer) in French, use the following mnemonic.
The sea parted as the mare (mer) and her foal walked towards it.

Examples of mer (sea) in a sentence
La mer est très calme aujourd'hui.
(The sea is very calm today).
J'aime écouter le bruit de la mer.
(I like to listen to the sound of the sea).
Ils ont une maison au bord de la mer.
(They have a house at the seaside).