FIGURE 3 in Two Northeast Pacific deep-water barnacle populations (Cirripedia: Calanticidae and Pachylasmatidae) from seamounts of the Juan de Fuca Ridge; " insular " endemics stemming from Tethys, or by subsequent dispersal from the Western Pacific center of distribution?

FIGURE 3. Group of several adult hermaphrodites of Calantica moskalevi Zevina and Galkin, 1989 in situ in the caldera of Axial Seamount (Fig. 1). The upper barnacle has its cirral net deployed for passive feeding in gentle currents. The cuticle of the barnacles, stained yellow-brown to gold apparently by ferromanganese oxides from venting 200 meters of so away, has sloughed off the apexes of some of the capitular plates, exposing the underlying calcitic shell to corrosion. Dissection reveals feeding appendages (Fig. 8) of the deep-sea rather than hydrothermal type.