Sponsor a swimmer by helping local families with registration assistance. The Central Maryland Swim League (CMSL) requires all athletes to have a family membership with their swim team pool, which varies by cost per pool. For the North Carroll Sea Lions, the 2026 cost for a family membership at the Lineboro-Manchester Lions Club Community Pool is $500 for the Summer. The cost to join swim team on top of the family membership is $153 per athlete, plus team suits.