What does Ebony mean?
A word-name from 'ebony', the dense black tropical hardwood, from Latin 'ebenus' (via Greek, ultimately Egyptian). Note: a vocabulary name; secondary nature theme reflects the tree/wood source.
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.