Gambierdiscus toxicus is a type of microscopic algae found in warm, tropical waters, particularly in the Pacific Ocean and Caribbean Sea. It is known for producing toxins that can accumulate in fish, leading to a condition called ciguatera fish poisoning when humans consume contaminated seafood. This algae thrives on coral reefs and can be harmful to marine life. The toxins produced by Gambierdiscus toxicus are heat-stable, meaning they are not destroyed by cooking. Awareness of this organism is important for both public health and the fishing industry, as it can impact food safety and local economies.