These groups are 1) the epipsammon, or surface-dwelling, generally motile macrofauna; 2) the endopsammon, or burrowing species that are too large to live in interstitial spaces; and 3) the mesopsammon, or interstitial fauna. The epipsammon is limited to a few groups such as fish or birds which are strong or speedy enough to exploit this turbulent environment.

She wrote some awfully slushy letters to Phil Bowen, and he read them aloud at the frat house one night.

He became tired of his daughter's sarcasm and smart remarks.

And other things, she echoed, nodding slowly and resting her body a little more atop him again.