
Postdoctoral Researcher at Scripps Institution of Oceanography, University of California, San Diego
Oceanic Volcanism – Research Division “Dynamics of the Ocean Floor”, GEOMAR - Helmholtz Centre for Ocean Research Kiel
Professor in Oceanography, Instituto de Ciencias del Mar y Limnología (ICML) UNAM
Head of Department of Life Sciences, The University of the West Indies, St. Augustine Campus, Trinidad and Tobago
Director of State Key Lab. of Marine Pollution, Chair Professor of Environmental Toxicology & Chemistry, City University of Hong Kong
Research Scientist, Senckenberg Research Institute and Natural History Museum Frankfurt
Executive Secretary of the Intergovernmental Oceanographic Commission (IOC) of UNESCO