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I am working on a project right now again in which I am having a pretty futuristic looking submarine underwater, working with jet propulsion. I want the blast pipes to spit out blue light, which is no problem, but I will also need many many different sized crowded bubbles behind them.

Just to give you guys an idea what kind of look I am after:

https://st4.depositphotos.com/1813545/21750/i/1600/depositphotos_217500626-stock-photo-underwater-swimmer-sea-air-jet.jpg

https://previews.123rf.com/images/zefart/zefart1806/zefart180600754/102834854-air-bubbles-from-jacuzzi-jet-in-bubbly-blue-water-in-a-thermal-spa-pool-abstract-background.jpg

The end result is going to be a still image, so I have not planned to animate anything.

And for all questions and further insight, the image I am working on. Still far from finished, but I want to collect some ideas on this: enter image description here

Thanks for reading and for any ideas! :)

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First, create a single bubble by making a sphere and making it a glass material, or however you want the bubble to look.

Add a particle system to the engine and under render, change the default halo to object, and under object, select your bubble enter image description here

To make each of the bubbles a different size, change the scale randomness to something higher like 1.

enter image description here

To change the velocity of the bubbles, change the direction you want them to flow under the velocity tab.

enter image description here

There are many more settings you can change like turning gravity on and off. Good Luck!

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    $\begingroup$ Thank you a lot for the quick answer Caleb, I’ll be sure to check this out! :) $\endgroup$
    – Deven
    Commented Jan 6, 2019 at 23:18

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