FIGURE 4 in Sponge inventory of the French Mediterranean waters, with an emphasis on cave-dwelling species

FIGURE 4. Four species that were taken into account in the sponge survey, although they were not previously selected, because they appeared more frequently than expected in the photoquadrats. A) Haliclona lacazei was always found in the semidark community, whereas the three remaining species were previously supposed to occur mostly in the dark community: B) Pseudocorticium jarrei, C) Myceliospongia araneosa, D) Plakina crypta. B and C are examples of skeletal-less sponges, which are quite abundant in underwater caves.