Why No Undersea Games??

Why are there no undersea games, I'm on 360 so really talking console based.And I'm not talking about walking from one area to another like they did in Bioshock 2 but proper under sea games. Ecco the Dolphin doesn't count. Space has been done to death as has above sea locations so why not undersea?


Why is gaming aimed at the straight populace?

Don't read in to this. Just have questions about stuff in general. Could have easily asked what an ostrich does for fun.

But games and gaming seem to be aimed at the hetrosexual populace. Very few, if any, are aimed at the Homosexual community. Indeed, it's never mentioned. Don't know why I asked.