Lakes and seas - false friends ahoy Edit
The German for the lake is der See (masculine) and the most commonly used word for the sea is das Meer (neuter).
There's another slightly less commonly used word for the seawhich is die See (feminine).
Be careful not to confuse der See (the lake) and die See (the sea). Keep in mind that the dative and genitive of die See (feminine - the sea) is der See. This example shows how important it is to know your noun genders and declension tables.
|singular||der See (masculine - the lake)||die See (feminine - the sea)||nominative||der See||die See|
|accusative||den See||die See|
|dative||dem See||der See|
|genitive||des Sees||der See|
The plural forms are identical.
|plural||die Seen (masculine - the lakes)||die Seen (feminine - the seas)||nominative||die Seen||die Seen|
|accusative||die Seen||die Seen|
|dative||den Seen||den Seen|
|genitive||der Seen||der Seen|