Offshore rigs are quite frankly ugly but underwater they are amazing artificial reefs. Decommissioned oil rigs in the Gulf of Mexico make for great dive sites!
Oil Rid GA393B
GPS: 28°36'46"N 95°09'59"W
Location: about 17 miles offshore in the Gulf of Mexico
Currents: Tide dependent
Type of bottom: Sand
Interests: Oil rig artificial reef
Water Temperature: 30°C all year round
Visibility: up to 20m
Description: Decommissioned oil rig which attracts a lot of wildlife especially batfish. There is a large broken tubular shaft close to the bottom that moves with the water, which you can hear thumping on the rig once you get close.
I went with Capt. Al from Ultra Dive Texas (tel. +1 281-469-2846; email: firstname.lastname@example.org). Rather expensive, it was $200 for two dives (plus tips).
The diving itself was very good, however the service on the boat could be better. There were some people renting BCDs and were given a horsecollar BCD! Also, we were dropped off downstream of strong currents so had to swim against it to get to the rig.