An underwater bubble bullet particle effect, creating a trail of bubbles in the bullet's wake, plus a slight random curve to its trajectory.
There's two versions of the effect - single shot and multiple shots.
For the Unity version, the built-in, HDRP and URP pipelines are all included.
Watach a video of Bullet Trails Underwater VFX here: https://www.youtube.com/watch?v=29ggyyMvbpI