One of the reasons I entered a triathlon was to conquer that fear.
I hired a patient, experienced swim coach who scratched her head and said 'we've got a bit of work to do' after watching me attempt to swim a 25m length.
I couldn't complete the length, but I listened to my coach, put the work in, and now I can swim.
It turned out the triathlon taught me to compartmentalise my fears, feel them and do it anyway.
I did not fall in love with ocean swimming – ocean swimming became a brief fling that I went out of my way to avoid.
Not right away though.
A month after completing a 1.9km swim in my first triathlon, I panicked during a 500m swim in a much shorter distance triathlon.
I made my way back to shore, sulked back to the transition area, packed up my toys and went home.
I have not swum more than 10m off the shore since. But here I am, back on the horse, so to speak.
On November 6, before the swim, I will repeat a mantra that reinforces that no one has been killed by a shark in Napier since 1896.
And that, because the 1896 victim's surname was Cooper, the odds of me being killed by an orca mistaking me in my wetsuit for a pregnant seal in the low light of dawn in a bay frequented by killer whales chasing stingrays is extraordinarily low.
And as the joke goes, in a triathlon, it all comes down to the horse. Sorry, the bike.
Hence the bike (and the run) are my favourite parts of the triathlon, because it is very difficult to drown during those disciplines.
Conversely, you are unlikely to be hit by a car during the swim portion.
Feel the fear and do it anyway. And remember, it all comes down to the bike.