There are three individuals in the image. The person on the left is wearing a white shirt and dark pants, standing near a large tank with a red and white label. The person in the middle is dressed in a blue shirt and dark pants, standing next to a tank with a green and white label. The person on the right is wearing a white shirt and dark pants, standing near a tank with a red and white label. All three individuals appear to be engaged in some form of work or activity related to the tanks.