Sea Pen

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Warm Up
300 swim

Set 1
2 x 300 @ b +30
:30 rest
2 x 200 @ b
:30 rest
4 x 100 @ b -5
(1400)

Warm Down
100 easy

Total: 1800

A sea pen is a colonial animal made of many polyps. One polyp grows and becomes the base, and the other polyps develop out of this main polyp.