So you like blue water? About 15 miles off the eastern shore of Yap you'll find some of the deepest of the deep blue sea, The Yap Trench. You won't be able to punch down the full 28,000 feet of it, but how would you like to drop down to about 80' and see what swims by?
And how about pelagics? While we're enroute to the Trench, keep your gear ready so you can hit the water when we run into the flocks of seabirds that denote the presence of schooling fish. When is the last time you plunged into a school of thousands of tuna surrounded by sharks and dolphins?