Possibly Potamogeton tricarinatus - see ref below - but was photographed at Hidden Secret Rockhole in the Doctor Hicks Rng GVD, which is a long long way outside the known range.
ABCO Caravan Services
BTA Towing Equipment
Bushtracker Owners Group Inc.
Hitch-Ezy Inventor
Edwards Tavern WODONGA Vic
Atlas Travel Centre
SIMPLICITY AXLES
COOKTOWN HOLIDAY PARK
ARB CAPALABA
Absolute Trailer Solutions
Bushtracker
Lovells Springs P/L
DIESELHEAT
Email