Abstract
Planulina ariminensis and Cibicidoides wuellerstorfi are not only epifaunal, but also prefer an elevated position above the sediment-water interface for a better chance to catch fond particles from slightly streaming water. They are attached to sponge skeletons, stones, hydroids and other objects protruding above the sediment surface. This elevated habitat explains why they are underrepresented in live populations collected from standard samples of loose sediment.