strange noises underwater

[ScubaSteve]

Silly question but a necessary one. Were there other snorkelers or divers in the water? Sound travels great distances underwater and it is near impossible to determine direction as well. I have messed with my regular dive buddy a couple of times where we would be swimming along and I would start to make a noise. I would look around and he would look around. Eventually he clued into the fact that it was me. So, it could possibly have been other people having fun assuming others were in the water.

 

[SnorkelLA]

Maybe you had the diving farts? But in all seriousness, the "rrr" depending on where you're diving could be a gator. Down here in Louisiana you don't want to dive any lakes or ponds, bayous or anything not related to the sea for the possibility of a gator. The clicking noise could be your fins hitting the bottom, or the straps loosening. Maybe the "rrr" is suction caused by a small underwater tunnel of some kind.

When you're in lakes there only a very small window that sounds can be coming from, life isn't as varied as the deep blue sea

 

[Jim Lapenta]

My guess is a vent of some type for the alien bases that are all over and the gubmint does not want you knowing about.
Could also be drilling activity. Rock transmits sound very well. In water it travels faster than in air. Around here we have the Marcellus Shale boom going on. It would not surprise me to hear strange noises under water near drilling sites as it they are transmitted through the earth.

 

[Matt Frankel]

I have seen before that some places have a large filter system for lakes. Almost like they have for pools. It is possible it could have been that.

 

[captain]

Sound travels faster and father in water than air.That is why it is hard to judge the direction sound is coming from. It reaches both ears so fast that the brain can't process the time difference to figure out direction like on land. The Navy has listening equipment on the ocean floor that can hear ships thousands of miles away. Any mechanical device such as a pump in contact with the water can be the cause.

 

[Tigerman]

I have seen before that some places have a large filter system for lakes. Almost like they have for pools. It is possible it could have been that.

We do in quite a lot of lakes around here. Theire pretty crude though, more like a welded rebar grate that catch all kinds of debris so it wont go into the inlet and through the hydroelectric turbines at the powerplants..

 

[diversteve]

rrr rrr rrr

could be a submersible pump - maybe someone there gets their water from the lake - or a nearby town? It also might be a bilge pump on a boat if there were any docked nearby. I heard one on a sailboat once long before the boat passed overhead. Was more of a continuous rrr sound though.

 

[dfx]

Rocks and pebbles being moved around in the water can also make a clicking sound. That's where I remember hearing it.