Fig. 1. Monte Carlo simulation diagram of photon scattering

Fig. 2. Monte Carlo simulation acceleration diagram of photon scattering

Fig. 3. Attenuation diagram of underwater volume element to light energy

Fig. 4. Variation curves of underwater light field with depth

Fig. 5. Relative error between Monte Carlo method and iterative method

Fig. 6. Diagram of point light emitting photons

Fig. 7. Underwater light field curve of point light source