I think there's something fishy about this family tale,
My 5x Gt Grandfather was supposedly eaten by a shark, he was 'supposedly' a sea faring man but I just can't find any evidence to prove this tale or disprove it ~ no death record either on land or at sea.
I know he existed, I have his marriage entry in the register, baptisms of his children and his wife a widow 13 years later.
All males in this family line had 'sea' related occupations in Plymouth, so a naval occupation would fit.
I do wonder how these tales come about ?