When I was ten, I learned to swim. To hold my breath, submerge, and move underwater. Only the torso, legs and arms of other people were visible. No heads. I never timed these underwater adventures but swam about like some kind of fish. Eyes open but no gills; just my expanded lungs, increasing capacity to stay under longer and longer. I became an orca scouting its prey. My feet, the fluke, pounding surface with each new breath. My mouth spewing water into the sunshine.
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NaPoWriMo Day 8 prompt to write your alter ego.