It may sound like a suicide mission, but the latest attraction for adrenaline junkies is\u2026 swimming with crocodiles.\r\nTourists pay more than \u00a35,000 to dive into a river in Botswana to swim alongside 12ft-long Nile crocodiles.\r\nThe creatures, which weigh up to half a ton and can kill a man with one snap of their massive jaws, are responsible for killing hundreds people every year.\r\nThe experience is organised by tour operator Big Animals, which assures thrill-seekers that the cold waters of the Okavango Delta, where the trips take place, make the crocodiles \u2018lethargic and slow\u2019.\r\nDivers are urged to descend quickly below the surface \u2013 the crocodile\u2019s \u2018kill zone\u2019 \u2013 and ensure they are not seen as a silhouette against the sun, which will make them likely to be seen as a \u2018potential meal\u2019.\r\n\u00a0\r\nWearing scuba gear, the group follow an expedition leader behind a crocodile, and when the time is right, one by one they will swim forward to be alongside it.\r\nBritish holidaymaker Tony Rowlands, 62, braved the dive and emerged not only intact but ecstatic.\r\nHe said: \u2018It was wonderful. You can swim up close to this massive prehistoric animal, knowing he could tear you to shreds in seconds but he doesn\u2019t, and it\u2019s wonderful.\u2019\r\nIn a small team accompanied by crocodile \u2018spotters\u2019 and experienced divers familiar with the territory, he went out each morning at daybreak in a flat-bottomed boat. Mr Rowlands, who owns property companies in Liverpool, said: \u2018We were quiet, looking all the time for a big croc warming himself on a riverbank. The big old ones are the best \u2013 they can be around 50 years old and they are scared of nothing and have no reason to be skittish.\r\n\u2018They\u2019re the last of the dinosaurs for a reason. They\u2019re survivors and they\u2019re clever.\u2019 Remembering the moment he swam alongside a crocodile, the former Royal Navy sailor said: \u2018I thought to myself, \u201cI should be more worried than I am \u2013 this is completely insane\u201d.\u2019\r\nAmos Nachoum, of California-based Big Animals, said: \u2018This is for people who want the ultimate experience but who are also experienced divers.\u2019\r\nBefore the dive, tourists have to sign a document waiving the Botswanan government and Big Animals of responsibility should anything go wrong.