While crossing rivers like the Tsavo and Galana where there are crocodiles lying in wait to consider, we walk in single file and close together. Both factors are enormously important. We never fall out of this formation (if you do on the Tsavo hike, you will incur Iain's wrath, otherwise known as "the look"). Crocs determine the whereabouts and likelihood of appropriate prey from sound waves they receive through the water. When all of us cross together we create sound waves which relay the message to any waiting croc that we are too big an animal to tangle with. The worst thing you can do is squat on your own by crocodile infested waters and say, dip your bandana in the water to wet it. To a croc you might be a solitary impala come to the river's edge to drink, and snap, you might be in trouble.
27-05-2009