How big are baby Portuguese man-of-war?

I am pretty sure I just had 3 of them on my pinkie finger...they are tiny! Look like little blue bubbles...very pretty, Which is why I had them on my finger to bring home and show boyfriend. He freaked out and was ready to take me to hospital. I did not know what it was. Have since found pictures and that was it. and it did sting. be care. they are all over the beach right now.