WTB Waterproof, Small, Low powered laser

Hello! I just saw a cool video on youtube of a waterproof laser which seemed pretty cool to me. So I am looking for a Waterproof laser (just to be able to get it into the pool), as small as possible and not that powerful; i just want to be able to see the beam. I prefer blue / green colors. So yeah if any of you guys have anything that meets this please PM me or just post it on this Tread.
Thank You.

You could do some searching on your own instead of having someone else do it for you. Let me google that for you.

Go with one of the 50mW 532nm lazerer or o-like waterproof models.

Just make sure that you lubricate the orings properly, and you may want to check individual pieces separately without the module being inside the laser, to make sure that the host is water tight.

lol
and make sure your swimming goggles are OD4+ XD
remember, safety first!