Personalized Submarine 6th Birthday Baby Bodysuit. THINGS ARE LOOKING UP 6th birthday Baby Bodysuit - Mauve with big number 6, 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.