FIGURE 2. Acanthopolymastia acanthoxa. A—specimen SMF 10539. B in Polymastiidae and Suberitidae (Porifera: Demospongiae: Hadromerida) of the deep Weddell Sea, Antarctic *

FIGURE 2. Acanthopolymastia acanthoxa. A—specimen SMF 10539. B—histological section of idem, general view. C—the same as B, detail of choanosome with acanthose centrotylote microxeas. D—microxeas at SEM. Scale bars: A 10 mm; B 1 mm; C 0.1 mm; D 0.03 mm.