An interesting combination of a hobby and work. Read about Seaventures.
From the Wall Street Journal, dateline 2010-09-18:
A onetime oil-drilling rig stands in crystal-clear waters dotted with tiny islands and their lush green hills. But most impressive is what’s underwater—an amazing array of coral reefs swarming with hundreds of species of multicolored tropical fish, sea turtles and other aquatic life. The rig has been converted to a hotel for snorkelers and especially for scuba divers.
…
“So far as we know, we’re the only ones in the world using an oil rig as a hotel and diving platform,” said Suzette Harris, the Singaporean owner. Her father-in-law, a regional Malaysian official, bought the rig in Singapore in 1988 (there, she said, “you can buy a used drilling platform just like you can buy a used boat.”). He had it towed into Borneo waters.
Wata - Malaysian Oil and Gas Engineer 
haha, looks like Seaventures.com has been hacked though? I wonder if there’s a deeper meaning to this…