Figure 3: A NASA ocean colour image over the Southern Ocean south of Australia showing a patch of elevated chlorophyll 150km long covering ~1000km2 at 40 days after iron-fertilisation during the New Zealand SOIREE iron experiment in January 1999. b) A microscope image of the diatom Fragilariopsis kergulensis, the diatom species that bloomed during the SOIREE iron experiment.