Each location on Isle Delfino contains an Italian word. This is likely in reference to Mario's nationality.
• Delfino Plaza - Dolphin Plaza
• Bianco Hills - White Hills
• Ricco Harbour - Rich Harbour
• Gelato Beach - Ice Cream Beach
• Pianta Village - Plant Village
• Noki Bay - Shell Bay
• Pinna Park - Fin Park
• Sirena Beach - Siren Beach
• Corona Mountain - Crown Mountain
Contributed by CuriousUserX90