Tall grass block is straightforward but tall seagrass is a one-of-a-kind block here. Not only is it a dual-height block, it’s also animated, so the method I used lately to fix seams on double height blocks such as doors and tall flowers won’t work here.
It’s not really a big deal, the block being underwater and waving the seam is barely visible.
Here you go !
HardTop Vanillaccurate 