From The Guardian article:
“Don’t get too close,” warned [local cameraman Brad Bestelink]. “Hippos kill more people in Africa than any other animal, and they snapped my last boat in half.” As we waited for them to move off, we were eaten alive by so many mosquitos it was a relief to get out of the boat and sink into armpit-deep black water.
We pushed the boat above our heads, while our legs underwater were getting slashed to ribbons by sword-grass. Then Brad surprised me. He told me to take my shoes off.
“With shoes on you’ll step on a crocodile and press down without knowing. It’ll take your leg off!” The look on my face demanded more explanation. “With bare feet”, he went on, “you can feel a crocodile’s skin and yank your leg out of the way.”
We gingerly pushed the boat on into the night, as long dark shapes lurched out of our way in the inky water. I’ve never paid more attention to every footstep.
So, next time you feel like you're having a tough day at work, be thankful your boss hasn't asked you to take off your shoes so it's easier to feel for crocodiles.