Through the 1990s he established a long series of World Records, often in close rivalry with Italian Umberto Pelizzari.
The rivalry of Pelizzari and Ferreras became the focus of the 2001 IMAX production Ocean Men: Extreme Dive, directed by renowned under water photographer Bob Talbot.
Umberto Eco | Umberto Giordano | Umberto I of Italy | Umberto Lenzi | Umberto Boccioni | Umberto Saba | Umberto II of Italy | Umberto Nobile | Umberto D. | Umberto Tozzi | Umberto Bossi | Umberto Spadaro | Arturo Umberto Illia | Umberto Zanotti Bianco | Umberto Smaila | Umberto Pelizzari | Umberto Guidoni | Umberto D'Orsi | Umberto D | Umberto Benigni | Umberto Agnelli | Umberto | Galleria Umberto I | Castell'Umberto |