Funny thing when I went driving a lot and had time to do things like that we went driving on Coral Reefs which was shallow Water and we dived on wrecks which where in deeper water.
Took lots of different safety procedures to dive on the deeper water dives and it wasn't something you could say well I did it this way in a 5 meter dive so it's safe in a 40 meter dive.
Also a Wreck may produce a Corel Reef in the medium term but it also tends to collapse under the weight of that growth in the long term. Hence there are many wrecks that are considered as Too Unsafe to dive on and have been banned. Like all things man made these eventually disappear without trace and in shallow water Oxidation is very quick, it's much quicker than Biomass growth.
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