Domoic acid is primarily known for its role in marine biology and environmental monitoring. It is a neurotoxin produced by certain species of algae, particularly Pseudo-nitzschia. When these algae bloom, they can contaminate shellfish and small fish, which, when consumed by humans or marine mammals, can lead to a condition known as Amnesic Shellfish Poisoning (ASP). Symptoms in humans include vomiting, nausea, diarrhea, and in severe cases, memory loss, seizures, and even death. Due to its potent neurotoxic effects, domoic acid is closely monitored in seafood safety programs worldwide to prevent outbreaks of ASP. Additionally, researchers study domoic acid to better understand its impact on marine ecosystems, particularly its effects on sea lions, seabirds, and other marine animals that suffer from poisoning after consuming contaminated prey. This research helps in developing strategies to mitigate the impact of harmful algal blooms on both marine life and human health.