What does Marina mean?
From the Latin adjective marinus/marina 'of the sea', itself from mare 'sea'. A long-established name across Romance and Slavic languages, borne by early Christian saints.
What does Aurelia mean?
Feminine of the Roman family name Aurelius, from Latin 'aureus' meaning 'golden' (root 'aurum', gold). A literal 'golden' name rather than a reference to golden hair.