evidence: On 30 October 2020, a strong normal-faulting earthquake (Mw 6.6, AFAD 2020) struck Samos Island in Greece and İzmir Province in Turkey in the eastern Aegean. The tsunami that followed the earthquake caused significant damage in Çeşme and Seferihisar Districts of İzmir and Samos Island coasts, and resulted in one casualty and several injured people from the tsunami on the Turkish side (Anadolu Agency 2020). Kandilli Observatory and Earthquake Research Institute (KOERI), Turkey’s national tsunami warning center and tsunami service provider for the North-Eastern Atlantic, the Mediterranean and Connected Seas Tsunami Warning System (NEAMTWS), issued a tsunami warning 11 min after the main event. [...] The tsunami that followed the 30 October 2020 earthquake confirms the potential tsunami generation of segmented normal faults in the eastern Aegean and highlights the tsunami threat in the region. The results of the post-tsunami field surveys performed along a ~ 110-km-long coastline demonstrate the significant tsunami impact. This study’s primary limitation was that the fieldwork had to be performed under Covid-19 pandemic conditions, limiting time and human interaction considerably. Nevertheless, we attempted to attain clear information based on evidence, which necessitates a proper evaluation of the tsunami traces and eyewitness observations.