Answer:

swam

Answer	Crossword Clue
SWAM	Participated in the first third of a triathlon
SWAM	Didn't just float
SWAM	Got one's kicks at the pool?

SWAM	Traveled in trunks?
SWAM	Went through channels?
SWAM	Competed in the first leg of a triathlon
SWAM	Stroked
SWAM	Began a triathlon
SWAM	Did laps
SWAM	Didn't sink
SWAM	Skinny-dipped

SWAM	Took a dip
SWAM	Did one leg of an Ironman competition
SWAM	Started a triathlon
SWAM	Went from bank to bank?
SWAM	Dog-paddled
SWAM	Did laps in a pool
SWAM	Did one-third of a triathlon
SWAM	Did the butterfly

SWAM	Emulated Janet Evans
SWAM	Was dizzy
SWAM	Traveled horizontally
SWAM	Emulated Leander
SWAM	Used a natatorium
SWAM	Frog-kicked
SWAM	Did laps in the pool
SWAM	Did the crawl

SWAM	Flutter-kicked