Three years ago we were in Katherine, on the ferry tour along the gorge, and Lyn was relieved we were in the boat and not in the water. However, it is only a fresh water crocodile or freshy, and not a salty, or the large agressive salt water crocodile. Saltys only periodically get into the gorge during the wet season when the water rises. The wildlife officers place plastic floats along the gorge bank. Apparently, saltys are curious and will investigate the floats, often damaging them, and so the officers know they need to remove one.