A researcher, Taryn-Lee Perrior, catches bull sharks to collect blood samples and investigate whether toxins found in the sharks could also affect humans. Across reporting from Sydney Morning Herald, Brisbane Times, and The Age, the articles state that Perrior caught more than 200 bull sharks during the previous summer as part of this testing work. The focus of the research is on analyzing the sharks’ blood for toxins and understanding potential implications for human health. The coverage describes the scale of the sampling effort and frames it as a study aimed at better characterizing biological substances present in bull sharks. While the stories refer to “putting a bull shark to sleep,” they consistently connect that handling process to enabling blood collection and subsequent laboratory analysis. All outlets present the work as research driven by scientific investigation into toxin presence in bull shark blood, with an explicit link to assessing possible effects on humans.