For those who have been following my efforts (https://www.legion.org/100miles/252678/100-miles-hope-land-sea-and-air), here is an update:

AIR: Complete! 1,817 of 1,000-mile piloting goal
SEA: Complete! 126 minutes of 100-minute scuba goal; 10.53 miles of 10-mile swimming goal
LAND: On track! 85.5 of 100-mile running goal; 663 miles of 1,000-mile bicycling goal

Here is a video I made at about the halfway point of the swimming portion of my challenge: https://www.youtube.com/watch?v=mf2l0tSXUgQ