Yes it is real. there are 2 tanks in the water, and wrecks of a few land craft, lots of bullets if you look carefully. I was snorkelling, you can easily swim out to it at low tide. my website has many more photos: saipan.keithtarrier.com/
what i know is that it was a sort of a weak tank in both defense and offense but it was fast, reliable, and a lot of things could be attached to it. but yes it was the most built american tank during those times
Unfortunately it was probably either hit by artillery or got hung up on the reef. If the crew bailed out, well, I don't know how good their chances would have been out in the lagoon with all that Japanese fire coming in.
mey those shermans rest in peace. Such a sight to see it above the water. Reminds me fo the sherman group the got swamped on Omaha Beach. The shermans got smacked by big waves and tipped them int the atlantic.