14/5/2024 Alejandro has collaborated in the documentary movie "Acuanautas bajo el volcán", emitted at the Spanish National TV. The movie forecasts the results of Projecto Subatlántida, led by Dr. Javier Lario (UNED, Spain), which focused on the geology of the Túnel de la Atlántida in Lanzarote—The longest underwater lava tube known in the world.