ClipArt ETC
"The common <em>Flustrae</em>, or <em>Sea-mats</em>, are flat and foliaceous in their form, presenting a considerable resemblence to in appearence to pale-brown sea-weeds, with which they are in fact generally confounded by sea-side visitors." &mdash; Goodrich, 1859

Flustra, avicularia

"The common Flustrae, or Sea-mats, are flat and foliaceous in their form, presenting…