In this twist on the migration variation of the 60-second drill, the "whirlpool" has patrons in one big group or spread evenly throughout the pool. At a designated catalyst number, patrons come together and begin their whirlpool. This will continue until the lifeguard staff stops them or until the designated victim goes passive and submerges. If the lifeguard staff stops them, they will separate and within 10 seconds comeback together and continue their whirlpool.