Demetres Karavellas is a conservation leader who has worked with WWF in various posts for over 30 years. He has been active in the field and on key policy issues linked to natural resources, conservation of species and critical habitats, climate change and sustainable development, at national, regional and global level. He is the CEO of WWF Greece and until recently chaired the WWF Mediterranean Marine Initiative. He recently took on the role of President of the Prespa Ohrid Nature Trust, a foundation supporting conservation actions in the broader Prespa-Ohrid region. He is also a member of the SDSN Leadership Council of Greece. He holds a BSc in Marine Biology from Queen Mary University and a MSc in Fisheries Biology & Management from Bangor University. He is an amateur underwater photographer and with family origins from the Dodecanese, he feels most at home in the waters of the Aegean.