In 3D rendering, simulating water is a complex task because water is a dynamic and transparent substance that interacts with light in intricate ways. Creating realistic water involves considering various properties, such as transparency, reflections, refractions, surface ripples, and caustics.
Implementing realistic water in 3D rendering often involves a combination of shader programming, texture mapping, environmental mapping, and advanced rendering algorithms. Modern rendering engines continue to advance, offering improved water simulations for more immersive visual experiences.