Atolla parva

Atolla parva is a species of true jellyfish in the family Atollidae. It is found in the north Atlantic Ocean and in waters around New Zealand.

Etymology
The genus name, Atolla, is derived from the word atoll. The specific epithet is derived from the Latin parvus, meaning "small"; this is in reference to the species' small size, with it generally not being larger than 30 mm in diameter.