In the video, there are two animated children, a boy and a girl, who are swimming underwater. The boy is wearing a red cap and the girl is wearing a red bow. They are surrounded by various sea creatures, including a purple octopus and a pink fish. The children are seen swimming around the ocean floor, which is covered in sand and coral. The water is a deep blue color, and the lighting suggests that it is daytime. The animation style is cartoonish and colorful, with the characters and creatures having exaggerated features.