Demosponge
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Demosponges or common sponges are sponges of the class Demospongiae, the most diverse group in the phylum Porifera which include greater than 90% of all extant sponges with nearly 8,800 species worldw
Sponges in Caribbean Sea, Cayman Islands
The carnivorous ping-pong tree sponge, Chondrocladia lampadiglobus
Monanchora arbuscula (Poecilosclerida)
Geodia barretti (Tetractinellida)
Heteroscleromorpha
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Heteroscleromorpha is a subclass of demosponges within the phylum Porifera.
Demosponge
…approximately 515 Ma) of the Sirius Passet Biota of North Greenland: this single specimen had a spicule assemblage similar to that found in the subclass Heteroscleromorpha. The earliest sponge-bearing reefs date to the Early Cambrian (they are the earliest known reef structure built by animals), exemplified by a small…
Axinella polypoides by Line 1