Botanical atlas

Marine Diatom

Thalassiosira pseudonana

Thalassiosira pseudonana is not an herb of hearth and healer, it is a single celled diatom of the open sea, and it carries no folk history of teas, poultices, or tinctures. Its real story belongs to modern science rather than old apothecaries. In 2004 it became the first diatom ever to have its full genome sequenced, turning this humble speck of the plankton into one of the most important reference organisms for understanding how the ocean breathes. Long before any laboratory noticed it, though, diatoms like this one had already been quietly doing the work of feeding the sea, forming the base of marine food webs that every fish, shellfish, and whale ultimately depends upon.

Safety.

Thalassiosira pseudonana is a marine diatom with no established tradition of human ingestion, and it should not be treated as a food, supplement, or herbal remedy. It is not known to be toxic in its natural marine environment, but it has not been evaluated for safe human consumption, its silica cell wall is not digestible, and unlike some other microalgae it has no history of dietary use or folk medicine. It is primarily encountered in scientific laboratories and aquaculture hatcheries, where it is handled under controlled, sterile conditions rather than gathered or prepared by hand. Anyone considering working with algae cultures for research, aquaculture, or any other purpose should consult a qualified marine biologist, phycologist, or other relevant professional rather than relying on general reference information.