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This image is an anaglyph in which a stereo image pair is combined into a single image using colour to separate the two views. To see the 3D stereo effect, you will need to use red green colour filter glasses (red for your left eye and green for your right eye). Such glasses can be obtained from your optometrist or specialty supplier. It is worth obtaining high quality anaglyphic glasses to achieve the best possible sense of depth. Cheap filters can often be found in novelty 3-D books. SEE HOW ANAGLYPHS ARE MADE.
Volvox is a freshwater alga that forms spherical colonies. Volvox is commonly studied in biology classes because it represents a possibly primordial organisational state between a colony and a multicellular organism.
Volvox Structure: individual cells (reminiscent of Chlamydomonas) are oriented with their flagella radiating out from the colonial ball (you can see this as a sort of halo or fringe). In some types, cytoplasmic bridges connect the cells giving the sphere surface a reticulated appearance. Daughter colonies are seen inside the parent colony.VOLVOX POSTER available from BioCam