Five days underwater in a shopping mall swimming pool were enough to get Namik Ekin mentioned in a newspaper (and mentioned here). The May 15, 2005 issue of Turks reports that:
A former Turkish marine stayed underwater for 121 hours and 35 minutes, breaking a world record, on Sunday. Namik Ekin, a former Turkish marine, stayed underwater for 121 hours and 35 minutes, setting a new world record. …
About eating underwater, Ekin said, "Being a former soldier, I used to eat whatever I can find. So I did not have difficulty". He said he missed going to the bathroom when he was underwater, adding
that, "Another difficulty was the tightness of the clothes."
(Thanks to Martin G of OhPurleese for bringing this to our attention.)