ABSTRACT
J.D. Hooker's samples came from seawater, the "scum of the ocean", salp stomachs, penguin guano, pancake ice, snow floating on the water surface, and mud with some species being found in more than one of these environments. In addition to the diatoms, dinoflagellates, and other relatively common taxa, a number of unusual organisms, often with unknown taxonomic affinities, have been reported from sea ice. Vertical distribution has been described from sea ice at Lutzow-Holm Bay and at McMurdo Sound. The seawater also contained dinoflagellates and micro flagellates. A checklist of marine phytoplankton and sea ice microalgae from Arctic Canada has been compiled from published and unpublished reports. V. Kh. Buinitsky reported 50 species of microalgae from ice collected from about 11 to 93E along the Antarctic coast; of these, 48 species were diatoms. M. Poulin and A. Cardinal reevaluated taxonomic information for more than 110 diatom species found in Manitounuk Sound, Hudson Bay.
