Personalized Submarine 3rd Birthday Baby Bodysuit. THINGS ARE LOOKING UP 3rd birthday Baby Bodysuit - Light Blue with big number 3, colorful submarine, little deep sea explorer in the porthole and bright fish with bubbles. Our unisex one piece baby bodysuit make great gift for newborns, babies, infants, baby showers and expectant moms. An ideal gift for any new parent who will want one in every color.