Here take a look at this, https://quizlet.com/13481242/levels-of-biological-organization-mrs-lloyd-flash-cards/
Nothing really big... It floats because of density not surface tension.
But You can try and discover what will happen. :)
( P.S if you'll drop soapstone it will probably create nice waves... )
My opinion is that EVEN IF there is anything that humans can do to save our species,
we will argue, debate, play politics, bask in absurd conspiracy theories, fritter around,
dilly dally, and totally ignore the urgency before us, until a time when nothing we're able
to do can any longer have any effect. And that's my opinion.