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.
The visit to see Charlie,  a 13 foot crocodile who swims up to the boat when called, is the highlight of the trip.
Visiting Charlie the dolphin, who will swim up to play with those who come to see him, is the highlight of the trip.