There is a place where the largest and most powerful river in the world meets the Atlantic ocean, and one of the most threatened species of elasmobranch - the largetooth sawfish - finds one of its last refuges on earth. In this episode of World of Sharks, we are joined by shark scientist and conservationist Dr Patricia Charvet, who has dedicated her life to understanding and protecting sharks and rays in her home country of Brazil. We discuss why the Amazonian coast is such a special place, the astounding diversity of sharks and rays that live there, and why Patricia's passion for the weird, wonderful but Critically Endangered sawfish. We also discuss Patricia's current SOSF-funded project (co-led with Dr Vicente Faria), which seeks to confirm the region as one of the last strongholds for this species, and works across fisheries, government and law enforcement agencies to raise awareness and encourage support for sawfish, and tackle the illegal trade of sawfish products.  You can follow Patricia on Instagram (@patricia.charvet, @amazoniancoastsawfish) and X/Twitter (@PatriciaCharve2, @amcoastsawfish).  You can also find out more about her project here: https://saveourseas.com/project/conserving-largetooth-sawfish-on-the-amazonian-coast/ Shownotes: www.saveourseas.com/worldofsharks/podcast