Fig. 6.3.

   . Common bloom species in New South Wales marine and estuarine waters: (A) light microscopy (LM) of the filamentous cyanobacterium Trichodesmium erythraeum producing raft-like bundles, up to 750 µm long; (B) LM of the balloon-shaped, colourless dinoflagellate Noctiluca scintillans, 200–500 µm diameter; (C) scanning electron microscopy (SEM) of the dinoflagellate Gonyaulax polygramma, showing ornamented cellulose plates with longitudinal ridges, 29–66 µm long; (D) LM of the large, unarmoured dinoflagellate Akashiwo sanguinea, 50–80 mm long; (E) SEM of the calcareous nanoplankton Gephyrocapsa oceanica, 15 µm diameter; (F) SEM of the triangular, armoured dinoflagellate cells of Prorocentrum cordatum, 10–15 µm wide and covered with minute spinules; (G) transmission electron microscopy (TEM) of the weakly silicified cell of the centric diatom Thalassiosira partheneia, 10 µm diameter; (H) TEM of a bloom of the pennate diatom Pseudo-nitzschia pseudodelicatissima, 57–150 µm long (photos courtesy of Ajani et al. 2001a).