About the Teeth of Sharks

The thing about a shark is—teeth,
One row above, one row beneath.

Now take a close look. Do you find
It has another row behind?

Still closer—here, I’ll hold your hat:
Has it a third row behind that?

Now look in and...Look out! Oh my,
I’ll never know now! Well, goodbye.

Copyright Credit: John Ciardi, "About the Teeth of Sharks" from You Read to Me, I'll Read to You (Philadelphia: Lippincott, 1962). Copyright © 1962 by John Ciardi. Used by permission of the Ciardi Family Publishing Trust.
Source: You Read to Me I'll Read to You (J. B. Lippincott, 1962)