At RRR you can do beach dive & boat diving.
There is no wall diving there but plenty of hard coral... cabbage coral garen...etc.
You will see all the marine life that you can find at Sipadan, but not the selection of Gobby's..... RRR is very famous for it.
More macro then Sipadan.
I like the Garden eel too .....
Lobster, sharks, baracudda, jack, snapper ...etc. All big size in schools.
As for wrecks .... they do have 1 wreck there.
I like the idea of them putting old buses skeleton in the ocean, by now the marine life there would be very RICH!!!!!!!!!!
All dive site are around RRR .... if you like to go Sipadan, let them know in advance & they can make the arrangement for you.
Only takes 45-60min from RRR to Sipadan ............. can see whale & dolphin on the way there, I did.
Ta for now.