Portmarnock Sub Aqua Club are the World Record holders at 
10km Underwater. We set the record of 1 hour 43 minutes 27 seconds on May 5th, 2000.
Portmarnock Sub Aqua Club are the World Record holders at 10km Underwater. We set the record of 1 hour 43 minutes 27 seconds on May 5th, 2000.