not just physically, mentally as well. You're out on the open ocean, and from your seated position, the horizon is only about two miles away. Since Galveston Island is very flat and low, once you've paddled out to the distances we were fishing, you can't see land.
I've done about 5 of these kinds of trips now (I don't do them very often because you have to pick your days, very late summer is really the only time you get those mill pond conditions that suit kayak fishing that far out) and I still am not used to the very naked exposed feeling of being out in the middle of seemingly limitless water in a tiny little boat. then when you hook a big fish, like a shark, especially, you really feel vulnerable.