"We listened to the water".
I would have considered that a past imperfect ie, "Nous ecoutions les bruits de l'eau" because you can't listen to water at a specific moment in time - it's a continuous action in the past. "Nous avons ecoute les bruits de l'eau" isn't appropriate.
We got splashed with water would be passe compose but not a continuous event of listening to the water?
Suggestions please....