what are They ?

[jeff of pa]

Just Curious, I'm sure Someone here Knows the Area.
at First I thought Bells, But considering the Number & how they are Set up
not a Loss, I Don't think. maybe Fish Habitat ?

I'd post the you tube video but it appears to be a cheeskake piece , and I know what
cheeskake looks like. just curious on these

 

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[CreakyDigger]

Just Curious, I'm sure Someone here Knows the Area.
at First I thought Bells, But considering the Number & how they are Set up
not a Loss, I Don't think. maybe Fish Habitat ?

View attachment 1995691

View attachment 1995692
View attachment 1995693
I'd post the you tube video but it appears to be a cheeskake piece , and I know what
cheeskake looks like. just curious on these

Could they be purposely manufactured as the basis for a coral reef to grow there?

 

[CreakyDigger]

Here you go.

 

[jeff of pa]

cool thanks I knew research by asking here on this one would be the fast way
there were 2 types used