Sea turtles are exposed to a range of anthropogenic stressors, including habitat degradation and pollution. Along the Brazilian coast, the discharge of untreated sewage into marine environments introduces fecal pathogens and contributes to habitat contamination. Owing to their longevity, migratory behavior, and ecological sensitivity, sea turtles are recognized as effective sentinels of environmental change. Rather than focusing on isolated records, this review advances a conceptual framework that interprets detections of Strongyloides sp., Hymenolepis sp., and Ascaris sp. in Cheloniidae as indicators of cross ecosystem disturbance. We critically examine possible exposure pathways, including sewage-driven contamination, sediment persistence, and altered trophic interactions, and discuss how these helminths may function as sentinels of fecal pollution and ecosystem health. Finally, we highlight knowledge gaps and research priorities necessary to validate these taxa as bioindicators.