Photo of Animalia: Bellybutton Nautilus (species: Nautilus macromphalus) (Lizard Island Field Guide)

Photo of Animalia: Bellybutton Nautilus (species: Nautilus macromphalus)

Nautilus macromphalus about 10.5 cm diameter from the Lizard Island area. Note the distinctive open umbilicus ("belly button") in which the coils of the shell can be seen.
© Lexie Gersbeck and Gabi Howarth

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