This paper concerns traditional as well as modern beliefs about Hawaiian 'aumakua, personal or family gods that originated as deified ancestors. They may take on physical forms such as spirit vehicles. An 'aumakua (plural, 'aumakua) may be manifested in a shark, owl, bird, octopus, selected plants, or even rocks.
Barrow, Leonard J.
"'Aumakua (Guardian Ancestors) in the Context of Contemporary Hawaiian Religious Beliefs,"
Rapa Nui Journal: Journal of the Easter Island Foundation: Vol. 13
, Article 4.
Available at: https://kahualike.manoa.hawaii.edu/rnj/vol13/iss2/4