A biologist, physicist, and a chemist all go to the beach for the first time.

The physicist, upon seeing the majestic waves, exclaims, “Behold! I wonder how much force the waves of the ocean can produce?”

And so he dives into the water but is never seen again.

The biologist, upon seeing fish in the water, cries out, “I wonder how many life forms live in the depths below?”

And so he too dives into the water and is never seen again.

The chemist, after having observed everything that happened, then pulls out his lab notebook and writes,

The physicist and the biologist were both soluble in water.