[dukme (OP)]

Hi, does anyone know the name of the attached stone taken from a ocean cave?  I'm not sure if this is a plant of some sort or an actual stone shaped by ocean water over time.  Please go here to see photos newbielink:http://www.reef.org/node/10116 [nonactive]

Thank you.

[Bill S]

Hi Dukme, welcome,

Whatever it is, it's a beauty!

My first thought would be to acid test it for calcite/aragonite.

[dukme (OP)]

Thanks Bill S for the help.  I've been searching on the internet and all indicators point to calcite/aragonite, as you stated.