group of mediterranean sponges

sponges group mediterranean sea rocks basal animal clade multicellular organisms pores channels jellylike mesohyl constant water flow animals aquaculture salt marine fauna vertical biodiversity colorful ocean underwater aquatic nature life aquarium fish tank spongia officinalis yellow tube sponge aplysina aerophoba chondrosia reniformis sarcotragus fasciculatus porifera demospongiae shallow littoral rocky surface welloxygenated