Big hunk of it washed ashore after the recent king tides. About 18".
Saltwater, shallow subtidal. Fouling on submerged rope.
Soft, organized in ~3 centimeter groups with a common excurrent siphon. Thank you for your help!
A soft, lightweight, porous, stinky rock. Is this some kind of sponge?
A yellow finger shaped sponge, washed up on some mudflats.
Sponges Growing on old oyster shells. This is shown during low tide.
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...