When your swim workouts back up against another triathlon discipline you should not only plan ahead with pre-exercise and recovery fuel, but also consume fuel during the workout.
Triathletes frequently experiment with nutrition strategies to optimize their cycling and run workouts, aiming to consume the right amount of fuel, electrolytes, and fluid before and during training for optimal nutrition. By approaching your swim workouts in the same way while adjusting for a few differences, you can get more out of your workouts in the pool and be more prepared for your other sessions, too.
Unfortunately, swim workouts seem to fall at the most inopportune times with regards to meal timing. Pools are often open only in the early morning or late evening hours. The conundrum, then, is how to time meals and snacks around training for the needed fuel boost, as well as keeping your gastrointestinal system placid and peaceful.