One 9 inch by 8.25 inch Shark Birthday Centerpiece. SHARK! Get off the table! No, wait. It's just our Shark Birthday Centerpiece. Our Shark Birthday Centerpiece looks like it is jumping out of the water, looking for a bite to eat. Place two along each table. Scatter gummy fish and Shark Birthday Confetti around the Shark Birthday Centerpieces. Long curls made of red curling ribbon strewn about would look pretty cool, too. Gruesome, but cool.