Harry Tzalas is a member of the Board of Directors of the Alexandria Center for Hellenistic Studies, born in Alexandria during 1936. He is President of Hellenic Institute of Ancient and Mediaeval Alexandrian Studies. He gave a series of seminars, in 2010, on Marine Archaeology to post-graduates at the Alexandria Center for Hellenistic Studies; and was a member of the Executive Committee of the Thalassa Museum at Ayia Napa, Cyprus (2005–2010). Harry Tzalas participated in the making of 22 scientific documentaries on Marine Archaeology. He has numerous published articles related to nautical archaeology, ship construction, and the history and topography of Ancient Alexandria in scientific periodicals and publications. In addition, four of his novels and short stories were published in Greek and two were translated into English; Farewell to Alexandria and Seven Days at the Cecil, which was published by the Bibliotheca Alexandrina. He was also the Secretary-General of the Ionion Center for the Arts and Culture in Athens. He has been active since 1989 in fighting drug addiction, and was elected for three terms as President of the Greek Therapy Center for Dependent Individuals.