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.
Atlas Travel Centre
Bushtracker
Bushtracker Owners Group Inc.
ARB CAPALABA
Absolute Trailer Solutions
BTA Towing Equipment
Hitch-Ezy Inventor
ABCO Caravan Services
Lovells Springs P/L
DIESELHEAT
SIMPLICITY AXLES
Edwards Tavern WODONGA Vic
COOKTOWN HOLIDAY PARK
Email