Australia (country) has Timor Sea and Arafura Sea on the north, not an ocean.
But New Guinea belongs to Australia (continent), so it doesn’t actually matter, both sides of the sea are the same continent. Unless we consider only the main landmass of each continent and ignore all islands.
Panama, with it’s canal, is entirely in North America too, so the canal doesn’t matter anyway.
Technically no, not when using the same argument.
Although Australia is also surrounded by ocean so Antarctica, Australia, and everything else
Australia (country) has Timor Sea and Arafura Sea on the north, not an ocean. But New Guinea belongs to Australia (continent), so it doesn’t actually matter, both sides of the sea are the same continent. Unless we consider only the main landmass of each continent and ignore all islands.
Panama, with it’s canal, is entirely in North America too, so the canal doesn’t matter anyway.