This is a list of surnames in which the categories include ocean.
AnkerDutch, Danish, Norwegian Metonymic surname for a sailor, meaning "anchor" in Dutch, Danish and Norwegian.
HalloranIrish From Irish Ó hAllmhuráin meaning "descendant of Allmhurán". The given name Allmhurán means "stranger from across the sea".
KrebsGerman Means "crab" in German, perhaps a nickname for a person with a crab-like walk.
McNamaraIrish From Irish Mac Conmara meaning "son of Conmara". The given name Conmara is composed of cú "hound" and muir "sea".
MurgiaSardinian Means "brine" in Sardinian, perhaps a nickname for someone who pickled foods.
Murray 1Scottish Derived from the region in Scotland called Moray (Gaelic Moireabh), possibly of Pictish origin, meaning "seashore, coast". A notable bearer of this surname was General James Murray (1721-1794), who was the first British Governor-General of Canada.
NicchiItalian From the Italian word nicchio meaning "shell", possibly a nickname for people related to the sea.