"la Mer du Nord"
de la mer is French for of the sea.
"La Mer" means "the sea" in French.
in French, the sea is translated 'la mer'
Sea animals are 'les animaux marins' in French.
A sea elephant is "un éléphant de mer" in French.
Mediterranean Sea
'la mer' (fem.) is the sea in French.
A sea otter is 'une loutre de mer' in French.
The Bering sea is "la mer de Bering" in French.
sea shells are coquillages in French. For the purpose of a meal, they are called 'fruits de mer' on the menu.
sea vixon
Sea lions are called either "otarie" or "lion de mer" in French.