Today's Geo Quiz sends us in search of a body of water off the north-east coast of Australia.

There are many coral formations under the sea. In fact, this is where the Great Barrier Reef is. On a breezy, sunny day, these waters are perfect for sailing.

And so Australian Jan Griffith and her family, including their dog Sophie, set sail one day last November.

Sophie the dog

“We reached a rough patch around some notorious rocks and we looked back to make sure Sophie was ok she was gone! And we searched for a long time looking for her. But it was no go and we actually thought she would have drowned immediately once she hit the wake of the boat.”

We'll learn Sophie's fate and the answer to today's Geo Quiz...