Ok so you suspect(?) an unknown wreck somewhere and your customers would like to find one. That is the purpose of these dives?Same marine life almost. Much less colorful. Generally speaking, we search for Wrecks mainly when we go that deep.
Ok od course there are other options to penetrate or visit deeper wrecks, but these shown profiles seem to be not adequate for this. Its just to make clear I got you right, or did I miss something?
But maybe its just a different approach. I personally would go only deep for a reason, which gives me something I cannot do more shallow.