Oceanography – Hydra-ology

Oceanography – Hydra-ology

Today, our team of oceanographers worked on another NOAA project involving a freshwater Cnidarian, the hydra. Turns out, in the Great Lakes of North America there is a population boom of the invasive Daphnia luminex (a close relative to the Daphnia we studied earlier this week). The Great Lakes all connect to the Atlantic Ocean. To prevent invasive spread of D. Luminex into the ocean waters, NOAA wanted us to test the feeding response of hydra on Daphnia to determine if it could be used as a biological control agent. They turned their camera phones into microscopes to document their investigation!

Ask your camper: Did the hydra eat the daphnia? (answers vary by campers, but chances are at least someone in the class had a successful foraging event!)

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