How to make Emitter just show in certain area?

Hi guys. How to make Emitter just show in certain area? I make bubble particle and put it under water. The underwater view is ok but when I leave the water a see it from the sky. I can clearly see bubble particle. What should I do to make bubble particle only shows in underwater? I’ve tried setting the bound for particle and actor collision. Anyway to solve this? Thank you.
Following images is outside the water and underwater.