I arrived in France expecting a focused research stay, but the month gave me far more scientific learning, cultural challenges, and memories I’ll carry forward.
At Watchfrog, I worked on the REACTIV ecotoxicity assay using transgenic Japanese Medaka embryos. The experiment was concentration-dependent, testing sludge samples diluted down to 0.00625% and wastewater up to 0.625%. Watching these tiny embryos function as living biosensors for environmental health was one of the most interesting parts. It gave me valuable practical insights that directly connect to my ongoing PhD work on pollutant sensing and ecotoxicity in treated sludge.
France tested me in many ways. The language barrier was constant, but my colleagues were incredibly supportive. I relied heavily on Google Translate, gestures, and the patience of those around me. One classic travel mishap happened when I accidentally took the wrong train from Paris and ended up heading to Melun. After several stations, some helpful teenagers confirmed I was on the wrong route.
The stay also coincided with a strong heatwave in Paris. The heat was draining, but my accommodation had a swimming pool with a jacuzzi. I used the opportunity to teach myself basic swimming through YouTube tutorials, a small but meaningful personal win.
My farewell brought one of the funniest moments. I wanted to bring cake for the team, but ordering it at the bakery turned into a 20-minute comedy of errors filled with laughter, pointing, and finally help from a kind stranger who translated for me.
This short secondment at Watchfrog expanded my perspective in more ways than I expected. It showed me the practical side of applied research, pushed me out of my comfort zone, and reminded me that scientific growth is often deeply connected to personal growth.
A big thank you to my co-supervisor, David Du Pasquier and especially to Sara Cvetković, who helped me with everything during my stay. Their support made the experience smooth and enjoyable.