The Riviera Nayarit Swimming Association and the Riviera Nayarit Convention and Visitors Bureau extend an open invitation to the 6th Riviera Nayarit Open Water “Nado Seguro” 3-5K, set to take place on the beach at the Marina in La Crux de Huanacaxtle on Saturday, April 23, 2016. Competition within the 18 categories begins at 7:30 a.m. These include Children, Youth, Master, Special Needs and Professional for both men and women. This event is all-i…