Freshwater sponge - growing in pool of slow moving water high in tanins (along stream that drains boggy areas).
Se encontro en el intermareal. Debajo de una roca.
Sponge found on underside of dock at Roche Harbor.
Sponges are animals of the phylum Porifera (/pɒˈrɪfərə/; meaning "pore bearer"). They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and which often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most...