Karenia brevis is a dinoflagellate. This algae bloom is known as an HAB (harmful algae bloom). This is the algae bloom which is covered in a previous one of my blogs. This bloom is very harmful and may also be known as the red tide. Neurotoxic shellfish poisoning happens when a shellfish is consumed which has come in contact with the toxin released by karenia brevis. What happens is basically stomach ache, vomiting, and nausea. These symptoms are the same for both humans and animals. For animals, a large consumption could result in death. Shellfish is a popular delicacy so without it tourism would be hurt slightly. People come to the coast to enjoy the sea and enjoy sea food. They can't enjoy sea food if it's poisoned.