James Billing has learned to swim fast.
He grew up in Zimbabwe water skiing on a crocodile infested Lake Kabila.
The Rotorua hotel manager will have other targets to meet next weekend - namely his brother's taunting - when he tackles the third annual Sunrise Rotorua Rotary Club worldwide Swimarathon fundraiser for polio.
Mr Billing wants to swim 100 lengths of the Aquatic Centre outdoor pool next Sunday - and has got his brother to sponsor him $1 a length. His wife will also sponsor him at 50 cents a length.
The former triathlete said he had not done a lot of training but hoped to make up for lost time with an intensive schedule this week. "It is a worthy cause and after living and growing up in Africa I saw the effects of polio first hand," he said.