Petrosia | |
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Petrosia ficiformis | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Porifera |
Class: | Demospongiae |
Order: | Haplosclerida |
Family: | Petrosiidae |
Genus: | Petrosia Vosmaer, 1885 |
Petrosia is a genus of sponges belonging to the family Petrosiidae. [1] Petrosia are well distributed from temperate zone waters to tropical and from intertidal zone to deep waters.[2]
The genus has almost cosmopolitan distribution.[1]
Sponges are effective filter feeders, and associated, undigested microorganisms can count up to 60% of the fresh weight of marine sponges.[3] These microorganisms include bacteria, fungi, cyanobacteria and unicellular algae.[4]