Marcus Island it is - not so floundering
Terry also got this from my previous post that I took down and PM'd me the answer, so well done as well.
It has an interesting history and although bombed repeatedly by US forces it was resupplied by submarine through a channel cut through the reef - you can see it in the photo above, and it is still visible today.
O/T:
I find it interesting that the US Carrier CVE-77 was renamed from USS Kanalku Bay to USS Marcus Island on 6 Nov 1943, yet the island was only captured by US forces in May 1945.
From Wiki
The Casablanca-class initially continued the US Navy's policy of naming escort carriers after bays and sounds, though several carried on the US Navy's tradition of naming aircraft carriers after battles. Those ships that appear to be named after islands, seas, straits or cities actually commemorated battles fought at those locations. Several had their original "Bay" names changed to battle names while under construction, and two of them (Midway and Coral Sea) lost their battle names mid-career to new Midway-class carriers, becoming USS St. Lo and USS Anzio respectively. Unlike the larger Essex and Independence-class carriers none were named to commemorate historical naval vessels.
This link might answer this
Over to you Dora-9