I am primarily interested in quantifying the extent of human-induced changes on marine communities and in evaluating the need for and success of different management initiatives. In my research I strive to place contemporary patterns in context with long-term changes.

I also developed and run eShark.org, a project that facilitates and collects statistically useful data from marine resource users, including scuba divers, snorkelers and fishers. Because eShark data are standardized among regions and resource users, the information is valuable for myself and other scientists in the assessment and monitoring of local and global marine animal populations.