Dr. Kontoyiannis is a physicist of the sea, a sea-going researcher who extracts valuable results based on the wealth of data obtained during his expeditions with the Hellenic Center of Marine Research. The main area of his vast experience has to do with sea currents, starting from the open seas (i.e. the Gulf Stream, which was the topic of his thesis) and reaching to a coastal ocean, like the Mediterranean, and more specifically the Aegean Sea. He talks about an interesting recent project he’s involved in - the measurements of Evoikos currents near his native Chalkis and the effort to examine its energy harvesting potential - and continues with the qualities (the “flame”, as he puts it) that young and aspiring students need to have, in order to become researchers and succeed in this demanding discipline. Interviewed by Yannis Rizopoulos for Tech Talks Central.