This lagoon is located on the way to Cayo Coco and is navigable across its 4.5 km² surface. It boasts beautiful natural canals, flanked by a dense forest of mangroves. The International Trout Center is located in this lagoon, due to the fact that it is one of the largest reservoirs for this species on the Island. 

On the northwestern tip of Cayo Coco, El Bagá is a natural theme park where the visitor has a path that leads to the most native flora and fauna in the region, as well as aspects of traditional culture and various facets of the history and culture of Cuba, from the native inhabitants to the present day. Visitors will be able to watch populations of Bagá trees in their natural environment, covered by orchids and "curujey" and enjoy watching a large number of endemic species, including iguanas, hutias, tortoises, crocodiles, fish and turtles. They can also visit the Yanas forest, navigate along a canal covered by red mangrove on aboriginal-style canoes, tour an aboriginal village and enjoy rites and customs, as well as the evolution of habits and customs in the countryside, walk along a Spanish-colonial promenade from the 18th and 19th centuries, attend an Afro-Cuban ritual, as well as dances and festivals from the towns along Ciego de Avila's coastal region, and enjoy the interesting history of piracy on the Bucanero Galleon.

This lagoon is located between Moron City and Jardines del Rey Tourist polo and is the largest natural reservoir in Cuba, with a surface area of 66 km2. It provides a haven for flamingos and a variety of other bird species as Tocororo, carpintero churroso, Mayito de Ciénaga, cernícalo, aura tiñosa, zunzún, martín pescador, falcón, gavilán del monte, and some migratory as huyuyo duck.

This is the second largest in the world, exceeded only by the Great Barrier Reef in Australia. Enjoy snorkeling in the coral reef and look the different sea species living at the reef. Its 24 dive sites are ideal for scuba diving and underwater photography.