Red Algae

South Pacific Ocean, Duration 12 seconds

in progress

Cyanidium (sigh-ann-id-ee-um) is a small coccoid RED alga. Although its colour is exactly the same as that of many prokaryotic blue-green algae, careful scrutiny of the cells shows that the pigments is not distributed throughout the cell, but is within a compartment (filling most of the cell). In nature, these cells form a coating several millimeters thick over the substrate. The cells also have an external organic wall. Most cells are solitary but small groups of dividing cells are also evident. Differential interference contrast. Material from Nymph Creek and Nymph Lake, thermal sites within Yellowstone National Park, photograph by Kathy Sheehan and David Patterson.

Rhodosorus (row-doe-sore-us) marinus, coccoid red alga, pyrenoid ringed with starch and plastids are evident. Differential interference microscopy. data on this strain.

Rhodella (row-dell-a) maculata, a unicellular red alga, image showing multiple plastids. -Differential interference microscopy. data on this strain.

A dichotomously branched species of the red algal genus Ceramium. The picture shows axis cells enclosed partially by cortical cells (red belts). Filament hairs arise from cortical cells.  Collected from Bodden, the brackish waters lying between the isles of Hiddensee and Ruegen (German Baltic Sea). This image was taken using Zeiss Universal with Olympus C7070 CCD camera.

Fornæs

Søndersund, Nees, Vestjylland, Danmark

Dokkedal, Himmerland, Danmark

Kielstrup Sø, Jylland, Danmark

Fjellerup Strand

Holmkær, NV-Jylland, Danmark

Fornæs

Fornæs, Djursland, Danmark

Fornæs

Sødringholm, Randers Fjord

Mariager Fjord nær Mariager, Danmark

Öland, Sverige

Fornæs

Rhodymenia palmaia.

Ptilota denosa.

Polysiphonia parasitica.

Rhodophycees ou Floridees (Algues rouges) Gigartinees, Gigartina acicularis (Wulf.) Lamour..

Rhodophycees ou Flrodees (Algues rouges) Rhodomelees, Polysiphonia urceolata (Lightf.) Grev..