There are four individuals in the image. They appear to be engaged in some form of activity, possibly related to underwater exploration or research. The person on the left is wearing a yellow life jacket and appears to be holding a long, flexible object that could be a tool or equipment. The second individual, located more towards the center, is also wearing a yellow life jacket and seems to be holding a similar flexible object. The third person, positioned on the right side, is similarly dressed in a yellow life jacket and is holding a similar object. The fourth individual, standing further back, is also wearing a yellow life jacket and appears to be holding a long, flexible object. All four individuals are wearing helmets for safety.