Date approximate (within about a month); exact dive site unsure, but somewhere off the coast of Punta Cana.
Photographed under microscope by high school biology class. From a water sample taken at pond in Rio Rancho, New Mexico.
No idea what this is but am hoping someone here does.
Sponge Dendrilla rosea
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...