[MC-126545] Strange granite spawning in oceans

This may be a freak, but it's still unintended behavior. Sometimes, granite, diorite or andersite will spawn in kelp. See attached screenshot.

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Please provide the seed and in-game location (xyz).

Sorry, can't just now - Hopefully get it done on 3/3/2018

Can't at all now - world is now corrupted

You could probably use something like mineatlas.com to get your seed from the level.dat file. If you can remember where it was.