The highlight of the trip is the visit to see  Charlie,  a 4-m (13-ft) crocodile who swims up to the boat when called.
Though the practice is discouraged, Charlie is often fed by guests and guides during the visit.
mnli hypothesis: Though the practice is discouraged, Charlie is often fed by guests and guides during the visit. premise: The highlight of the trip is the visit to see  Charlie,  a 4-m (13-ft) crocodile who swims up to the boat when called.