The Strange Ocean is a considerably difficult map. It's advance/expert. The bloons are usually more powerful, with stronger variations of bloon types or bloons with buffs appearing in place of their normal counter-parts. So on round 46 the moab will most likely have some sort of enhancement (for example a Carrier bay) and other bloons will have buffs too. But the thing that makes this map so different is the paths... There are no paths! The bloon spawns on 1 side and they travel along the map and try to get to the other side. Any tower can be placed anywhere, water or land. The ocean is strange...