Uru people in the context of Desaguadero River (Bolivia)

A floating island is a mass of floating aquatic plants, mud, and peat ranging in thickness from several centimeters to a few meters. Sometimes referred to as tussocks, floatons, or suds, floating islands are found in many parts of the world. They exist less commonly as an artificial island. Floating islands are generally found on marshlands, lakes, and similar wetland locations, and can be many hectares in size.

The neotropic cormorant or olivaceous cormorant (Nannopterum brasilianum) is a medium-sized cormorant found throughout the American tropics and subtropics, from the middle Rio Grande and the Gulf and Californian coasts of the United States south through Mexico and Central America to southern South America, where it is called by the indigenous name of biguá. It also breeds in the Bahamas, Cuba, and Trinidad. It can be found both on coasts (including some mangrove areas) and in inland waters. There are at least two subspecies: N. b. mexicanum from Nicaragua northwards and N. b. brasilianum further south. In Peru, the neotropic cormorant is used by the Uru people for fishing.

Totora (Schoenoplectus californicus subsp. tatora) is a subspecies of the giant bulrush sedge. It is found in South America, notably on Lake Titicaca, the middle coast of Peru and on Easter Island in the Pacific Ocean. The genus Schoenoplectus is closely related to Scirpus and sometimes included therein. This plant can reach a height of 6 m (20 ft) and commonly reaches 4 m (13 ft). The word totora comes from the Quechua language.

The people of the mid-coast region of Peru have used totora to build their caballitos de totora, small rowed and straddled fishing vessels, for at least 3,000 years. The Uru people, an indigenous people predating the Inca civilisation, live on Lake Titicaca upon floating islands fashioned from this plant. The Uru people also use the totora plant to make boats (balsas) of the bundled dried plant reeds. In Titicaca, it commonly grows at a water depth of 2.5–3 m (8.2–9.8 ft) but occurs less frequently as deep as 5.5 m (18 ft).

Caballitos de totora are reed watercraft used by fishermen in Peru for the past 3000 years, archaeologically evidenced from pottery shards. Named for the way they are ridden, straddled ('little reed horses' in English), fishermen use them to transport their nets and collect fish in their inner cavity. The name is not the original name, as horses were not introduced to South America until after the Spanish conquest of the Inca Empire. The ancient Mochica name of the watercraft is tūp. They are made from the same reed, the totora (Schoenoplectus californicus subsp. tatora), used by the Uru people on Lake Titicaca, and considered part of the Peruvian's National Cultural Heritage since 2016.