Blender 3D. Procedural Fish Simulation. Fast Caustics Water

See animation: https://youtu.be/GpOUQ9jeATE

The entire animation is created using "procedural nodes," eliminating the need for keyframe animation or rigging the model. Simply open the project, press the spacebar (play), and watch the simulation in action. This system can be easily adapted to any other model by adding the "FishAnimation" modifier. The "FishAnimation" modifier includes several user-friendly parameters that allow for easy customization. You can adjust the starting point of the animation with the Time Offset parameter and control the speed using the Time Divider. The Motion Delay parameter lets you delay the movement of the fish, while the Scale parameter allows you to modify the overall size of the fish. Additionally, the Movement Scale parameter alters the range of the fish’s movement, and the Wave Frequency parameter changes the frequency of the wave patterns. Lastly, the Rotation parameter lets you adjust the rotation of the fish, providing a comprehensive set of tools to fine-tune the animation to your liking.

The simulation is designed to work seamlessly in EEVEE. Additionally, the file contains a fully textured fish model with UV mapping and a Material Shader for light reflections, creating an underwater effect with realistic caustics and surface light. This setup provides a versatile and efficient solution for creating dynamic underwater scenes without the complexity of traditional animation techniques.