FIGURE 6 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil

FIGURE 6. External morphology of Dactylocalyx pumiceus. A–E, living specimens in situ (A, B off Pará State, C–E off Maranhão State). Arrow in D points to a derelict fishing line threatening the sponge; F, fresh specimen onboard; G, detail of outer surface showing openings of tubules; H, fragment of specimen after fixation with long grooves (A, F, G: MNRJ 21299; C, H: MNRJ 21284; B, D, E: not collected). Photographs by F. Moraes (A–B), and R. Moura (C–E).