Gyarados, Pokemon

A woman dressed in a blue and yellow costume, posing by a pool. She has long blue hair and is wearing a blue corset with yellow accents, complemented by a white skirt. Her left hand is raised to her ear, while her right hand rests on the edge of the pool. In the background, there are several people standing around the pool area, some of whom are also dressed in costumes. The overall atmosphere suggests that this image was taken at an event or gathering where attendees are encouraged to dress up and have fun.