This video is a cartoon animation featuring a character in a yellow submarine with a light on top, exploring the ocean floor. The character is seen swimming near coral reefs and encountering a dolphin. The dolphin is shown swimming alongside the submarine, and in one frame, it appears to be pushing the submarine. The ocean floor is depicted with various types of coral and plants, and the water is a deep blue color. The animation style is colorful and playful, with the character and dolphin displaying friendly expressions.