Guam - It was 52-years ago Don Walsh and partner Jacques Piccard traveled to the bottom of the Marianas Trench on the Bathyscaph Trieste and yesterday, from the Mermaid Sapphire Walsh watched from the control room as Cameron made the same journey into the challenger deep. Walsh says Cameron remained in high spirits throughout the expedition.

"His mood was very buoyant and he'd been up since midnight doing all the checklists and no sleep but you get on that kind of high and you're running on adrenaline I suppose he was in a great mood before he went down I chatted with him just before he shut the lid and when he came back up there was the same guy," he said.

Walsh said it was sad that it took 52 years to see someone finally go back to bottom of the trench.