Truly useful laser pointer

[pisauron]

I use the Nitescuba G20 laser. It's also a 2000lm flashlight.
The laser is easly seen during daylight.

It's excellent to get fish attention (like cats) or buddy attention.

At night it's even better since you can have both laser and flashlight on. It helps distinct your light from others.

The battery holds 1-2 hours on low. 1 hour on high.

I recommend it. I bought mine from Amazon. But also available on Ali

 

[spatty99]

If these are anything like their non waterproof lasers, the 500mw would likely have a huge range...

"ORCA" Waterproof Green Laser Pointer 200mW - 500mW

The ORCA waterproof 200mw green laser pointer is fully submergible with IP7 waterproof standard up to 30 meters of depth. Use this laser underwater.

biglasers.com

 

[high_order1]

lasers don't like atmosphere.

If it is strong enough to penetrate water to any appreciable distance without being degraded, it is probably not healthy for your eyes, either.

The issue would be catching a reflection off something up close and suffering an instant eye injury.

The 'color' (wavelength) also directly effects the ability of the beam to penetrate.

And, there is a lot of lying when it comes to non-commercial lasers. For instance, the amount of infrared energy that escapes. IR is highly problematic if you aren't looking for it because you can't see it, and it can hurt your eyes without ever knowing you are being splashed.

You can very easily buy something in the US that would be an immediate hazard to you.

 

[tridacna]

How about unnatural and messes with things and thinking people don't like it

I feel the same way about UW photographers.

 

[USdiver1]

I feel the same way about U/W photographers.

Q: "How do you turn a great dive buddy into a stroke?"

A: "Give him a camera."

 

[happy-diver]

Do lasers bounce back off particulates like your headlights bounce off fog or something

 

[TNEngineer]

Do lasers bounce back off particulates like your headlights bounce off fog or something

Yes. If they didn't you wouldn't be able to see the beam (collimated light) except straight on.

 

[high_order1]

I know it was rhetorical, but

That's why in laser light shows and movies they blow cold fog or cigar smoke or something.