Along with whales, porpoises, and other cetacean species, dolphins are one way that researchers know to sound the alarm about environmental hazards that might affect the ocean as a whole and potentially humans. In this context, researchers have connected neurotoxins from algal blooms to brain changes associated with an Alzheimer’s-like disease in dolphins in Florida. The dolphins who stranded during the summer algal bloom season had 2,900 times the concentration of 2,4-DAB than those from non-bloom seasons. What’s more, these results were consistent across dolphin strandings for close to a decade, and the changes were more drastic with each algal bloom season. As such, there needs to be more research into the consequences of harmful algal blooms and exposure to their toxins.