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Tardigrades Water Bears are a phylum of extremophile invertebrates that can survive at temperatures from just above absolute zero to boiling. Easily view these organisms using a stereoscope or low power compound microscope.

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Maintenance Alert

Maintain Tardigrades by feeding them Chlamydomonas or other single-celled green algae. Use chlorine-free spring water for all water exchanges. After aerating the culture with a pipet, allow the Tardigrades to settle before harvesting. Using high power on a stereoscope, they will be visible moving throughout the debris.

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Hypsibius dujardini. Tardigrades are a phylum of invertebrates that are extremophiles. They can survive at temperatures from just above absolute zero to boiling! Extreme pressure, radiation, desiccation for a decade and even 10 days in the vacuum of space will not kill an entire population of these tiny invertebrates. You can easily view these fascinating organisms using a stereoscope or low power compound microscope.