Thomas Smiley, 65, was swimming off a Maui beach over the weekend when the shark attacked him.
He had just retired as an optometrist and was scheduled to fly home to the Sacramento area the day after the attack.
Smiley and his wife were married for 42 years and were high school sweethearts from Southern California.
Gale Smiley described her husband as "the most wonderful family man ... loved his kids, loved his grandchildren. The family is taking it really hard because they absolutely adored him. And he lived for his family."