Sponge Dendrilla rosea
Bright orange lumps about 3-4cm across on rocks at low tide. A sea anemone?
Found in stream on small rocks and on the freshwater mussel shell by Bruce while we were looking in the stream. I think they must be freshwater sponges. We took them out of the stream for a photo then put them back.
It was very squishy and lumpy . we saw the sponge at incoming tide in rock pools around Kaikoura.
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...