Workout

Warm-up (600)
300 swim
300 kick/swim

Set (700)
8 x 50
4 drill/swim on :55
4 swim on :45
100 easy

Set (1500)
3 x 200 on 3:20
...descend 1-3
100 easy on 1:40
2 x 200 on 3:15
...descend 1-2
100 easy on 1:45
1 x 200 FAST
100 easy 

Set (300)
300 pull
..5 cb
...hold steady pace
  
Cool-down (200)
200 EZ choice