Making holes in a sphere

Hi there,

Basically I've got a hollow sphere and I need to make many holes in a radom pattern.

I'm struggling to work out how to go about it.

Ideally I need to draw out circles in a sketch to then wrap around my sphere but this is not possible.

Is the only way of projecting the circles on a spherical face and then deleting the inside,  doing an offset, loft and knit?

This would completly deform the circles on the edges where the curve is at it's steepest.

Thanks in advance for your help.

Charles