Algal blooms were evident in the lower Pumicestone Passage and on Bribie Island beaches late in October 2019. This media report aims to dispel some myths that these phenomena are “natural” events without human influence. A potential solution (constructed wetlands to alleviate stormwater impacts) is flagged. Sewage is also a major contributor to phosphorus pollution in Moreton Bay. The aquatic systems are under stress: these warning signs need to be heeded.