"The duck likes cold water."
Translation:הברווז אוהב מים קרים.
Yes. Some words are set plurals, and some of them don't even have a singular form, such as מים. Other exceptions are: שמים, חיים, פנים (sky, life, face). This is actually a bit confusing for me because when I speak English I keep stopping myself saying "my face are" or "the sky are" or "life are".