The Dive Ireland International Expo 2015, run in conjunction with the Irish Underwater Council and Lough Derg Sub Aqua Club, is running at the Abbey Court Hotel, Nenagh until Monday.
The show will include speeches from International dive experts, trade stands from Ireland and the UK and a large photography exhibition.
Derry O'Donnell, Chairman of Lough Derg Sub Aqua Club says it's a huge honour to have the event in Tipperary and there's something for everyone.
