It is known as one of the most shark-infested coastal waters in the world and there are numerous signs warning swimmers of the dangers. Like Second Beach, most of the attacks are carried out by bull sharks. Last year, teenager Bruna Gobbi's fatal attack was caught on film. Graphic footage showed the 18-year-old swimming, before being dragged underwater as the water turns red. She became the 57th person to be attacked off Recife in the last 20 years.