Until recent years, Miri is rising to be a diving spot locations..not much people know about it..even the local people i can say 8/10 they don't know about the treasure Miri has herself =P
Oh those photos are the untouched coral reefs found in Miri-sibuti region. Nice right?
And the 2nd photo is nudibrand..sorry forgot the name of that species..anyway t40 or more species of nudibranchs have already been sighted.
Feel free to browse through cocodive website
http://www.cocodive.com.my/