**Preface to "Marine Bioactive Natural Product Studies—A Southern Hemisphere Perspective"**

The search for bioactive secondary metabolites from marine organisms has been an active area of research since the 1950s. The distinct biodiversity of the marine environment has afforded a vast array of unique secondary metabolites, many of which possess potent biological activities. This Special Issue of Marine Drugs highlights recent bioactive marine natural product studies conducted by southern hemisphere scientists on an array of marine organisms. In total, nine articles were published, covering the discovery of a range of unique marine natural products from the southern hemisphere, by implementing various strategies including synthesis, SAR studies, various isolation strategies and computational studies.

> **Sylvia Urban** *Editor*
