Algirosphaera robusta
This species is of interest since it lives in the deep photic zone, more than 50m below the surface, and is therefore poorly known. A single cell was recently isolated from Mediterranean sea-water and successfully maintained in culture, which has allowed detailed study of its morphology and behaviour.

Details: Specimen from the Alboran Sea, western Mediterranean (R/V Hesperides cruise Mater II, station 69).
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