Through the combination of artificial components and living organisms, we can develop a novel methodology for aquatic monitoring. By observing the responses of organisms to changes in their environment, a broad-spectrum sensor was created. One of the organisms broadly used as a biosensor is Daphnia. Its broad distribution and well-studied biology make it a promising element for incorporating into a biohybrid. This Daphnia-based sensor was calibrated against increasing salinity as a preliminary experiment. The swimming behaviour (spinning and movement inhibition) was observed for different salinities. The results showcase significant and observable differences. This and other calibration experiments will be used here as bases for the behavioural results interpretation.

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