Shell-like

Comets do not always have tails. They develop a fuzzy, shell-like cloud called a coma, and one, two, or three tails when near the sun.

Source: tatoeba (6294045)

"Nay, speak not so hastily; consider well the point; take me feature by feature, forgetting not my form, and my hands and feet, and my hair, and the whiteness of my skin, and then tell me truly, hast thou ever known a woman who in aught, ay, in one little portion of her beauty, in the curve of an eyelash even, or the modelling of a shell-like ear, is justified to hold a light before my loveliness?"

Source: wiktionary

Can I have a quick word in your shell-like, when you've got a moment?

Source: wiktionary