Here's a report of my 6th trip on the Undersea Explorer to the Great Barrier Reef and the Coral Sea: Undersea Explorer - 16 to 22 August 2008. Overall it was another great trip despite the fact that I was still recovering from the 'flu. The highlight of the trip would have to be the school of 20+ hammerheads we saw on day 3. I just wish I could have spent more time in the water and taken more photographs.