Tropical and sub-tropical parts of the world seem very attractive to me as I sit looking at the rain lashing against the windows. It;s not exactly cold but much cooler than of late.
The postcard shows the UNESCO World Heritage Site of the Great Barrier Reef off Queensland in the north east of Australia. The stamps are from a definitive issue (2010) showing Fishes of the Reef. These ones aren't found only on the Great Barrier Reef, but also off Western Australia.
From the top: Regal Angelfish, Spotted Sweetlips, and Clown Triggerfish. You've got to love anything called Spotted Sweetlips!
This is a post for Sunday Stamps, now hosted by Violet Sky at "See it on a Postcard!"