Bonnie's Backport Mod

The Update Aquatic, fully working on 1.12.2.

Not just the blocks: the whole update, working the way it does in 1.13. New oceans to explore, mobs that behave like the real ones, and swimming that feels right.

What's in it

• Oceans: warm coral reefs, kelp forests, icebergs, underwater caves, shipwrecks, ocean ruins and buried treasure
• Mobs: dolphins, turtles, cod, salmon, pufferfish, tropical fish, drowned and phantoms
• Swimming and waterlogging: swim and crawl, and stairs, slabs, fences and more can hold water
• Items: the trident, the conduit, the turtle shell and new potions
• A head start on later updates: deepslate, crimson, warped, mangrove, cherry and bamboo wood, and more

Built for modpacks

• Every feature can be switched off in the config
• Fish and mobs spawn in modded biomes too
• Drops are vanilla items, so other mods' recipes keep working
• Works alongside Aqua Acrobatics, and Cubic Chunks is supported
• No Mojang files inside: textures and sounds are downloaded once, on first launch (needs internet that one time)

Requires

MixinBooter and AssetMover.

Coming next

Village & Pillage (1.14), then every update up to 1.21

Swimming is based on Aqua Acrobatics (public domain).