Some comic book storylines are memorable for a single event. Sometimes a character dies, other times a new character might debut. Sometimes it’s the passing of a torch that sticks in readers’ memories.
Did you know that one of the greatest Aquaman runs of all time took place when the hero of Atlantis didn't even have his own series? Arthur Curry is one of the oldest superheroes, first debuting in 1941's More Fun Comics #73.