St. John's Jellyfish

Calvadosia cruxmelitensis is a stalked jellyfish which inhabits the intertidal and sublittoral zones of rocky coasts in south-western England and the Atlantic coast of Ireland. Name The Latin name of this species, cruxmelitensis, refers to the arrangement of the white nematocyst capsules (stinging organs) in the distinctive pattern of a Maltese Cross. In 2010, Natural England, the Guardian and the Oxford University Museum of Natural History ran a competition asking members of the public to provide a common name for this species.

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Las estauromedusas (Stauromedusae) son un orden de la clase Staurozoa, del filo Cnidaria. Se trata de formas sésiles. La superficie aboral (ver simetría radial), correspondiente a la exumbrela de otras medusas, se prolonga en un tallo gracias al cual se fijan al sustrato, en especial algas y rocas.