This song, along with 18 other science songs, is available on "What's in the Water?"
What’s in the water afloat?
Is it a squid or a boat?
More than positive thinking
Keeps those things from sinking
Positive buoyancy – floating in the sea
Toss a hefty stone in
Some heavy metal thrown in
Sink sown right under
Density , no wonder
Negative buoyancy, sinking in the sea
But some things neither sink nor float, is doesn’t seem do-able
Snarkabing, their buoyancy is perfectly neutral
And some things can change buoyancy, just like a submarine
Float on top, sink below, and everywhere in between