I think this is salpingoeca. 100x DIC, 6 frame stack pmax. The stack caught the flagellum in various positions. Lower body sphere ~ 5m diameter.
sometime later, I caught these monosiga. I think there are two diplosiga (pointing down). Got to them after they got stressed, so no flagellum visible. 100x DIC, 5um body sphere. 24 frame stack pmax
monosiga, diplosiga, and salpingoeca
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