The Great Barrier Reef.
The word is Marlin not Merlin. They are a "Pelagic" fish of the Ocean and some of the greatest and well known places for fishing for them are on and around the Australian Great Barrier Reef.
atoll
Atoll
It depends upon the dictionary. The Macquarie Junior Dictionary used in many Australian primary schools lists the next word as "reef".
The proper noun Great Barrier Reef is a concrete noun, a word for a physical thing.
An Australian dog that is also a five-letter word is a Dingo.
A fringing reef is a type of reef that closely borders the shoreline and is separated from the land by shallow water.
Aussie
emu
There is no Aboriginal word for the entire reef, just parts of the reef, some part names inculde "Kupuntutu passage" and "Bandjin Reefs", these names simply acknowledge the traditional owners identity. Another section is called the "Gumoo Woojabuddee Section", it means "Bigfulla water".
roof, reef, riff, ruff
The Australian outback is a great place.