This tool allows even non-experts to 'explore' the biodiversity of Scyphozoa, Cubozoa and Staurozoa, by approaching in an easy and intuitive way their identification. The system consists of two query interfaces: 1) The first is a multi-entry interface that allows you to specify a set of easily observable characters related to morphology. The result will be a list of names or a photo gallery of all the organisms that possess the specified characters. Clicking on the name of each species, you will obtain a taxon page with more images and an explanatory note (when available). Currently, the system is in the testing phase and is published online to gather comments and corrections from users. We would be grateful for any feedback for improving it (please write to Massimo Avian -