Largest flag unfurled underwater
Who
ARC Ataa Alresalah
What
90.3 square metre(s)
Where
Saudi Arabia (Jeddah)
When

The largest flag unfurled underwater measures 90.3 m² (971 ft² 141.27 in²) and was achieved by ARC Ataa Alresalah (Saudi Arabia) in Jeddah, Saudi Arabia, on 29 September 2017.

The flag unfurled underwater was the flag of Saudi Arabia. The attempt happened during Saudi National Day.