So far this year, about 900 illegal migrants have been found at sea near Australia - four times the number for all of 2008.

With so many spectacular waters to dive around the world, I'll never run out of locations to put my certification to good use.

But the captain of the vessel remains in custody following the incident, which happened in disputed waters.

Some nations have deployed ships or aircraft to disputed waters.

Another wild card here is that there is no definitive estimate of how much methane in this hydrate/clathrate form exists in our seas and oceans.