FIGURE 14 in Manned submersible dives reveal a singular assemblage of Hexactinellida (Porifera) off the Amazon River mouth, Northern Brazil

FIGURE 14. Environment and populations of Hexactinellida off the Amazon River mouth, Northern Brazil. A, Hyalonema (Cyliconemaoida) alucia sp. nov. on muddy sand bottom off Pará State, 378 m depth; B, Claviscopulia facunda population on coarse sand to gravel bottom off Pará State, 250 m depth; C, Dactylocalyx pumiceus on rocky outcrop off Pará State, 260 m depth; D–F, Dense sponge community dominated by Dactylocalyx pumiceus on hard carbonate bottom off Maranhão State, at 170 m depth (D) and 180 m depth (E). Photographs by F. Moraes (A–C) and R. Moura (D–E).