Nuthing..
I normally don’t eat much, or anything, before diving. Usually only a cup of coffee to wake up and then some water to hydrate. Maybe some small snacks during the surface intervals. I think diving, or the anticipation and preparation before a dive, suppresses any hunger.
I’ve found diving with a full stomach can be uncomfortable at best, and at worse.. well – at least the fish will be happy…..
What and how much I can eat after a day of diving is a totally different matter....
Sometimes the best part of diving is afterwards: the hot shower, the first cold beer and then being a complete pig in the kitchen, BBQ or restaurant…
Cheers,
Rohan.
BTW - did you know it takes a long time to pluck lemongrass out of a second stage while being mobbed by fish....