What is this?
river
What is this?
sea or ocean
What is this?
reservoir
What is this?
lake
What is this?
lake
What is this?
swimming pool
What is this?
lake
What is this?
river
What is this?
pond
What is this?
ocean
What is this?
pond
What is this?
ocean
What is this?
pond
What is this?
pond
What is this?
rain
What is this?
rain
What is this?
reservoir
What is this?
rain
What is this?
sea
What is this?
sea