Visualize a Plesiosaurus swimming under the ocean. The image should be filled with vibrant and saturated colors, dynamic shapes and forms, and geometric elements representing the digital art style. The aquatic environment should be teaming with marine life, glowing corals, and translucent waves above. The Plesiosaurus should be depicted with a combination of sharp and curved lines, with hues of blues and greys. In the distance, sun rays should filter through the ocean surface casting an enchanting glow on the sea creature and its surroundings.