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Sponges are animals. Yes! Spongebob is a real sea animal, and the cartoon isn't entirely fiction. Those sponges you use to wash dishes and bath, some were once alive. More so, they've been around since
Phylum Porifera 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.
I just liked this little scene; nice texture on the sponge too. To the right is a brown algae; some species are actually purple. The brown edges are calcium carbonate that the algae uses to make itself distasteful