Illusion of Movemen

The image below is from a page in Marvel's four part comic series that is based off of Cirque du Soleil's show KA. The image shows the illusion of movement. The movement can be seen as one of the characters seems to be reaching down in one of the panels, while in the other panel the same character is reaching out with her hand towards us. The "bubbles" that surround the two characters shows how they might be underwater and are swimming. The way the one character has her arm shows that she is moving down. In the other panel her arm is coming towards the viewer which shows her swimming back up to the surface. Without the "bubbles" the characters would seem like they are falling; the "bubbles" slow down the movement. The page as a whole shows movement, and every piece in the page works together to convey it.