- Practice assistant of Geological Oceanography, 1995-96, 1996-97 and 1997-98. School of Marine Sciences, University of Cadiz, Spain.

- Full-time professor of Coastal Environmental Geology, 1998-99. School of Marine Sciences, University of Cadiz, Spain.

- Practice assistant of Marine Resources, 2001-02. School of Marine and Environmental Sciences, University of Algarve, Portugal.