Use the 애로우 keys to control the jellyfish and eat plankton. Streams of bubbles carry 당신 upwards. Avoid knocking into the 상단, 맨 위로 of the 'tank'; also beware of crabs. Fun!
This is a simple idea THAT 당신 CAN ADAPT. Use different materials for tentacles, cut the paper plate into a 더 많이 realistic (or crazy 또는 whatever) jellyfish shape. THE ONLY IS YOUR IMAGINATION.