At 39 years old, Isidro is one of the few young people who learned silbo gomero directly from his parent.

BBC: Silbo gomero: A whistling language revived

The whistled language of La Gomera Island in the Canaries, the Silbo Gomero, replicates the islanders' habitual language (Castilian Spanish) with whistling.

UNESCO: Culture

Taught in schools since 1999, the Silbo Gomero is understood by almost all islanders and practised by the vast majority, particularly the elderly and the young.

UNESCO: Culture