The Pirates of the Caribbean sail the Caribbean seas, Hence the name Caribbean.
If they stayed on land they wouldn't be pirates.
Axis naval activity in Australian waters happened in 1941.
Whale sharks are native to Australian waters, as well as to waters elsewhere.
Orca's live in all waters around the world. Mostly cold waters ^^ So there might be a chance they live in Australian waters too.
1700s
Oceans are international waters, any country or individual can sail on them.
Shallow waters
Yes: dolphins are common in Australian waters.
they sail the seven seas because they want to find gold.
The same way as everyone else
because they sail on ships.