group of young children in costumes, likely at a school or event

group of young children in costumes, likely at a school or event. Several children are dressed as sea creatures, with one in a blue shark costume and another in a pink shark costume. Another child is wearing a green dinosaur costume. A woman, possibly a teacher, is visible in the background. The children appear to be standing in a line or gathered together, with some engaging with the camera. The environment appears to be outdoors, possibly a courtyard or playground, with a building and trees in the background. The lighting suggests it is daytime. The video is shaky and the focus shifts between different children. In the latter part of the video, the costumes change to superhero and princess attire, indicating a potential costume change or a different group of children.