Ochrophyta

Padina gymnospora is not the primary subject of the video clip; the primary subject is Pomacentrus coelestis (Neon damsel). Indo-Pacific, Duration 72 seconds

Coral Sea, Duration 34 seconds

Eastern North Pacific Ocean, Duration 22 seconds

G. delicatula cells are cylindrica, with flat valves. Each cell as a spine extending from the valve margin. This spine fits into a depression on the adjacent cell to form chains. Few but large chromatophores are present usually at the cell periphery. This species can form large blooms in the spring and early summer

This image was made from samples taken during a scientific cruise in the Pacific. Water was filtered to concentrate the organisms that were present, then dried onto a thin sheet of plastic and then shadowed with a fine layer of metal to provide contrast. The preparation was then observed with an electron-microscope. This technique has been used to document the diversity of marine microbes, especially, protists in the oceans.

Chaetoceros socialis (key-toss-err-oss sew-see-ah-liss), a centric diatom in with long spines. In this species dozens or hundreds of cells are linked loosely together by their spines. Common in marine ecosystems. Dark ground.

Chain of Porosira glacialis. Note that the delicate spines are chitinous. Focus on frustule surface. Scale bar indicates 50 µm. The image was built up using several photomicrographic frames with manual stacking technique.  Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera. 

Pinguiococcus (ping-wee-cock-us) pyrenoidosus ) pyrenoidosus (pinguiophyte), a small marine phytoplankter, with a deeply bilobed golden chloroplast and a large central pyrenoid (basis for the specific epithet). Name not formally published at the this time. Differential interference microscopy.

Image shows chloroplasts, small sparkling droplets of storage matter, and the fine connection tubes between the cells. Scale bar indicates 100 µm.  Sample from North Sea near Heligoland (spring diatom bloom). Images were taken using Zeiss Universal with Olympus C7070 CCD camera. 

Actinoptychus heliopelta.

Lilleør, Samsø, Danmark

Fjellerup Strand

Lilleør, Samsø, Danmark

Fornæs, Djursland, Danmark

Sangstrup Klint

Sangstrup Klint

Sardinia

Limfjorden Ertebølle

Lillebælt ved Nørreskoven på Als. Danmark

Hjerritsdal ved Mariager Fjord, Danmark

[taxonomy:genus=Navicula] Date: 23 Aug 2011 Location: Drain on NUS science campus. Clear flowing water with scruffy brown debris at the bottom. Microscope: Bright-field with closed condenser aperture. Camera: Nikon D7000 Collector: Brandon Seah Scale: 20830 pixels/mm = 20.8 pixels/µm

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