Smithsonian Marine Station, National Museum of Natural History, Smithsonian Institution

University of Canterbury

Professor of Chemistry, University of Aberdeen

Pukyong National University, Busan, Republic of Korea (ex- Chosun Univ.)

Universidade de São Paulo

Professor and Chair, Medicinal Chemistry, University of Florida

Professor of Chemistry , Ocean University of China

Professor of Chemistry

Associate Professor, Director Centre of Excellence in Marine Biotechnology

Professor of Chemistry, The University of Queensland