One Voice in the Cosmic Fugue

"The Heike were engaged in a long and bloody war...with another Samurai clan, the Genji."

Battles are shown.

"Only 43 Heike survived, all women. These former ladies-in-waiting of the Imperial Court..."

"These Heike crabs, when caught, are not eaten. They're thrown back to the sea"

Boy falling into water is shown (who ultimately drowns)

"This legend raises a lovely problem: How does it come about that the face of a warrior is cut on the carapace of a Japanese crab? How could it be?"

"The more you look like a Samurai, the better your chances for survival. Eventually, there are a lot of crabs that look like Samurai warriors."

Boy falling into water (who ultimately drowns)

"This process is called artificial selection."

"Evolution is a fact, not a theory. It really happened."

Spiders

"Nature is prolific. There are many more creatures that are born than can possibly survive."

"A journey to the nucleus of the cell. First we need a cell."

Carl makes a tiny prick in his finger

"The casual act of pricking a finger..."

While the pricking is over now, real capillaries are shown with blood coursing through, this may make some feel uncomfortable, if you want to skip that, you can wait for the following line, where it transitions from real images to cartoons
"Plunging through the membrane, we find ourselves inside the cell"

"Within every living thing, the molecular machines are busy making sure that nucleic acids will continue to reproduce."

Blood coursing through capillaries are shown

"Human DNA is a coiled ladder...a billion nucleotides long."