Fig. 2
From: The diatom Mediopyxis helysia Kühn, Hargreaves & Halliger 2006 at Helgoland Roads: a success story?
Representative images of Mediopyxis helysia taken from net samples at the Helgoland Roads station: a, b Live cells in broad girdle view, note the difference in diameter, c live cell in valve view, d, e Scanning electron micrographs: d whole frustule, e Valve view of the central region showing the labiate process (Scale bar for a–c = 20 μm, d = 100 μm, in e = 5 μm)