Usage examples (8)

• (Sertularia, abietina and operculata); these last are found especially attached to stones, shells and sea-weeds.
• Voyage of the Astrolabe that an Actinia or sea-anemone, as well as a flexible coralline allied to Sertularia, both possess this means of offence or defence.
• In the larger Sertularia the whole branched tree is connected by jelly threads, running through the stem, and all the thousands of mouths are spread out in the water.
• I have, however, prepared a slide with this membrane removed and there you can observe the different parts, and learn that each one of these alcoves contains a complete animal,...