The Titicaca water frog is an endangered species found in the high-altitude lakes of the Andes.

I found a velvet water bug crawling on the rocks.

I saw a group of velvet water bugs swimming in the pond.

I saw a group of giant water bugs at the pond.

I saw a giant water bug in the pond.

I saw a creeping water bug in the pond.

I saw a group of creeping water bugs near the pond.

The diamond-water paradox is an economic concept that refers to the apparent contradiction that diamonds, which have little practical use, are valued more than water, which is essential for survival.

The rats were trained in the Morris water maze.

The researchers conducted experiments using Morris water mazes.