Answer: aku

AnswerCrossword Clue
AKUWhen doubled, a Heyerdahl title
AKUDoubled, a Thor Heyerdahl title
AKUHawaiian skipjack tuna
AKUHalf a Heyerdahl title
AKUHawaiian fish.
AKUHalf of Heyerdahl's title.
AKUHalf of a Heyerdahl title.
AKUHawaiian bonito
AKUHawaiian fish
AKUWhen doubled, a Thor Heyerdahl title
AKUWhen repeated, a Thor Heyerdahl title
AKUWhen repeated, Thor Heyerdahl book
AKUHawaiian victorfish