<prompt> Translate the following text to EnglishKila kituo cha kupiga mbizi kimeandikishwa na serikali ya Ugiriki, na kina sifa ya kutoa mafunzo kwa wapiga mbizi wapya na usimamizi kwa wapiga mbizi wenye sifa.  <response>: Each dive center is registered by the Greek government, and qualified to offer training for novice divers and supervision for qualified divers. 