Small, transparent bell in the shape of a witch's hat. There is a central cavity but no opening at the pointed end. Live animals have a string of tentacles that trail behind the swimming bell. Bell up to 2 cm long.
These animals sometimes wash ashore in large numbers. In these beach-washed remains, the tentacle trail is retracted or lost, leaving a transparent small cone. This species can be confused with small free-swimming sea squirts (known as salps) that have openings at both ends. They are more closely related to sea-floor dwelling hydroids than they are to other jellyfish.
Open waters in tropical and temperate oceans, to depth of 300 m.
Not known to be dangerous to humans.
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed