The documentary "Ägyptens versunkene Hafenstadt/Cités engloutis – Thônis-Héracléion en Egypt" will re-air on arte 9 December at 12.20h (Germany) and 15.50h (France).
The documentary is also available onlinewith English subtitles until 7 December:
https://www.arte.tv/en/videos/045744-000-A/egypt-s-sunken-city/