On December 18, 2000, a 41-year-old MacColl was holidaying in Cozumel, Mexico with her partner and two sons.
She and her children, along with an instructor went scuba diving at the Chankanaab reef, part of a national marine park which was a specifically designated diving area, where unauthorised boats weren’t allowed to enter.
As the group were surfacing from a dive, a powerboat moving at high speed entered the restricted area.
In an act of utter heroism, MacColl – who saw the boat coming before her children did – raced over to her son Jamie (then 15), who was in its path, and pushed him out of the way.
Tragically, she was struck by the boat which ran over her and died instantly after sustaining severe injuries to the chest.
She had sacrificed her own life for her son’s, who only sustained minor head and rib injuries from the collision.