Виталий, climbing - это "восхождение, альпинизм, скалолазание" и т.д.

Elena, когда речь идет о хобби, частенько говорят: My mother's INTO clay modeling. I'm into stamp-collecting. My brother's into kick boxing, и т.д. This lets the listener know that it's a pastime, passion, etc. :)

Ok, Uly, I was thinking that I missed something :)

But to say " to do clay modelling" - is it still correct?

Oh yes, you're translation is perfectly correct too.

Ok, thanks