Transforming into a crocodile suggests that the people of the sea worshipped crocodiles as their totem, feathers of cormorant was used in the ubuya, a hut for a delivery of baby, as magic (a spell) for safe delivery ('Shaku Nihongi' (annotated text of the Nihon Shoki) 'Nihonki-sanso'), and Amenooshihito no Mikoto swept away a crab when the ubuya was built as a similar magic to celebrate the long life and good health of the newborn.
ワニに化したのは海人族がワニをトーテムとして崇拝したことを示唆し、産屋にウの羽根を用いるのは安産呪術であり（「釈日本紀」「日本紀纂疏」）、産屋が設けられたとき天忍人命がカニを掃ったのは生児の長寿息災をことほぐ類似呪術である。