1. A large macula utriculi and crista neglecta may be necessary for body orientation during diving.

2. The most common Blue bottle in Australia is Physalia utriculus, a small relative of the larger and more venomous Portuguese Man-o’-war from the Atlantic (P

3. The hair cell type I in cristae ampullares and maculae utriculi show a specific pathology, featuring fusion of the stereocilia and presence of a rod-shaped inclusion body.