Mushrooms

If they are "mushrooms" you could try the old country trick of eating them ! midden

I don't think digging the mushies up would help - after all, they are just the fruiting body of the fungus - the 'plant' itself is spread about under the gound. As Marguerite says, I think improving your lawn would help - i.e. using fertilisers and maybe improving the drainage. Some mushies stem from old rotten wood underneath the surface - if you think that might be the case, then only an excavation will tell!

I know that many people have got fungi this year - including me! I am sure that it's the dratted weather's fault! Everywhere has got too wet.