Sellaphora inhabits waters of near neutral pH. Sellaphora pupula is a freshwater species. See the references for informsation on the pupula group.
Sellaphora, species undetermined, found in diatomite deposit at Three Lakes, core TL5, at 3.6 to 3.7 m depth.
See Sellaphora on Algaebase or
Diatoms.org or on the
Natural History Museum of Wales website.