Flatworms in HD, thanks Morphologic Studios!
Posted on Tuesday, May 4th, 2010 at 11:53 am by Reef ToolsThis cool Flatworms High Definition video from Morphologic Studios, shown at 3x the actual speed, depicts to movement and behavior of these “cute” little things. Also known as Red planaria, this common pest will rapidly grow in numbers in tanks with elevated nutrient levels. At high population levels, red planaria can cover corals and block the light from reaching them. Where’s a Blue Velvet Nudibranch when you need one? 😉
The flatworms (Convolutriloba retrogemma) featured in the video are shown at 3x normal speed. They each range from 2-4mm in total length.
These particular flatworms harbor symbiotic zooxanthellae in their thin tissue and utilize the excess sugars they create as their primary energy source. Packets of zooxanthellae can be seen as the tiny, red-brown dots along the back of flatworm. Their reliance upon this photosynthesis requires that these flatworms bask in sunlight like little photovoltaic cells, and enables them to live without a developed digestive system.

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