ClipArt ETC
"Hydractina Echinata. c, the canosarc, forming an incrustation over the object on which it lives; n, nutritive polyps; r, reproductive polyps, bearing buds in which are ova; t, tentacles." — Galloway

Hydractina Echinata

"Hydractina Echinata. c, the canosarc, forming an incrustation over the object on which it lives; n,…