Nick Vujicic, an Australian motivational speaker who was born without limbs, swims with sharks at the Marine Life Park in Singapore, Sept 5, 2013. Vujicic dived with sharks in a customized acrylic enclosure that takes in a 360-degree view of the shark habitat at the aquarium. Vujicic is in Singapore to give a motivational talk to a 5,000 strong audience on Saturday. [Photo/Agencies]