[REQ] What I'd like to see

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I'd love to see the following:

1) Coral reefs and atolls.

2) Reduce the size of the massive boulders on the seabed.

3) Can someone reintroduce dolphins from SH3 Grey Wolves?

4) Wrecked ships in Pearl Harbor.

Speaking of wrecked ships, has anyone else noticed wrecks "migrating" their position over time? I sank a carrier in Kobe harbor. When I went back the next day it moved about 1nm to the north and was "flashing," intersected with one of the docks. When I came back a day later it had moved a further 1.5nm to the ENE, lying peacefully (not flashing) just offshore. Who knows where it went from there? The "sunk ship" marker on the map didn't move at all.

Obviously if there is a "migrating wreck" issue it would pose a problem for making a post-attack Pearl Harbor. I might come back from patrol to find the Arizona sitting on Wakiki Beach, or atop Diamond Head. But they seemed to be able to introduce wrecks into Grey Wolves ...