What's munching my rhubarb?

I planted this up in a fit of hopefulness last year and have been heartened to find that it has been thriving despite my pretty haphazard gardening ability. I think the snails are trying their hardest to 'do' for my fruit. But to my delight it is fighting back with lots of new growth. Roll on rhubarb crumble and custard now the weather seems to have turned!