utriculus

No fatalities from envenomation are recorded for P. utriculus, in contrast to the larger species.

P. utriculus is responsible for most of the reported injuries on Australian beaches, where up to 30,000 stings are reported.

Individuals of P. utriculus sometimes become stranded on beaches, where their toxic nematocysts can remain potent for weeks or months in moist conditions.

Unlike P. physalis, no fatalities have been recorded for P. utriculus stings.

Utricle (Latin: utriculus, diminutive of utur, meaining "leather bag") can refer to:

Acanthodians share with Actinopterygii the characteristic of three otoliths, the sagitta in the sacculus, the asteriscus in the lagena, and the lapillus in the utriculus.

The generic name Utricularia is similarly derived from the Latin utriculus, a word which has many related meanings but which most commonly means wine flask or leather bottle.

Physalia utriculus, also called Blue Bottle or (Indo-Pacific) Portuguese Man-of-War, is a marine hydrozoan of the order Siphonophora found in the Indian and Pacific oceans.

The species Physalia utriculus is given the common name Pacific man o' war to distinguish it from the more widely distributed and larger Physalia physalis, the Portuguese man o' war.

P. utriculus is distinguished from the Atlantic Portuguese Man o' War (Physalia physalis) by the smaller size of the float (six inches compared to twelve) and by having a single long fishing tentacle.

The utricle, or utriculus (Latin: utriculus, diminutive of utur, meaining "leather bag"), along with the saccule is one of the two otolith organs located in the vertebrate inner ear.

In the male the Müllerian ducts atrophy, but traces of their anterior ends are represented by the appendices testis (hydatids of Morgagni of the male), while their terminal fused portions form the utriculus in the floor of the prostatic urethra.