[1] The Marlins operate three training facilities: Northern Kentucky University using the NKU Campus Recreation Center, Five Seasons Sports Club, and its headquarters at Keating Natatorium on the campus of St. Xavier High School in Finneytown, Ohio.

Keating has seating capacity for over 700 spectators and is the site of many USA Swimming and High School meets and championships.

Marlins South swimmers train at Northern Kentucky University using the Campus Recreation Center.

[4] In their first decade, the Marlins practiced at Aiken and Courter Technical high schools, but these borrowed facilities could not accommodate the team as it grew to more than 200 swimmers.

[1] Significant achievements include: · 1980 National Team Champions · 23 Olympic Medals · 15 World Records · 19 American Records · 60 National Champions · 6 American Swimmers of the Year [1] The Marlins have been home to many accomplished swimmers, including 25 Olympic qualifiers.