Sculptures of dolphins made with trash are exhibited at the Rio de Janeiro Federal University in Rio de Janeiro, Brazil, Monday, June 1, 2015. Art students have taken advantage of a material they have in endless supply _ trash _ to create an exhibition that aims to draw attention to the fetid state of the city's Guanabara Bay, where the Olympic sailing events are to be held next year. (AP Photo/Silvia Izquierdo)
