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It is shown that at the direct contact with shungite (10.00 and 100.00 g/l) as well as in the presence of shungite isolated on the dialysis sac (100.00 g/l), the survival and fertility of Daphnia magna decrease as compared to the control during 10 days of observation. Shungite effect is inter alia linked to a mechanical failure of Daphnia magna filtration apparatus. Concentrations of 0.01 and 0.10 g/l did not affect crustacean survival and fertility. Shungite in the centration of 0.01 g/l lowered toxic effect of potassium in concentrations of 0.005-0.02 g/l on both Ceriodaphnia and Daphnia magna.

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