Subaquatic

Bug Fixes (as of this mod's latest version):

MC-1691 (Sprinting/falling on thin/small blocks uses the block below for the particles)
MC-8820 (Walking on thin/small blocks produces sounds from the blocks below them)
MC-118096 (Incorrect position of particles when using bone meal on grass block)
MC-129794 (Water particles are not biome-affected)
MC-130137 (Grass and mycelium don't decay underwater)

Big Features (as of this mod's latest version):

All ocean biomes from Update Aquatic!
Bubble columns (works in ANY Material.WATER fluid!)
Chest boats, ender chest boats, ender chest minecarts, crafting table boats, crafting table minecarts, and furnace boats!
"Fish", cod, salmon, pufferfish, tropical fish entities!
Glow lichen
Hanging roots & rooted dirt (generates instead of dirt under all properly coded trees)
Kelp, seagrass, sea pickles, and coral generation!
Mud and mud bricks
New villager type: Marine Biologist (see source code for trades)
Froglights (currently only obtainable through marine biologist trades)
Realistic fishing (fishing reels in actual fish entities instead of fish items! note that this mod also adds an enchantment that counteracts this)
Serves a library mod for other mods to add their own custom ocean biomes!
Smooth blocks (smooth stone, smooth sandstone, smooth red sandstone, smooth quartz, and smooth lapis lazuli)

Small Features (as of this mod's latest version):

Baby zombies burn in daylight
Beacon activation, deactivation, and ambient sounds
Bubble pop particle and sound
Bubble particles last longer
Bubble particles appear when chests are opened underwater, and appear during underwater explosions
C418 underwater ambient sounds and music
Cauldrons apply water physics to entities
Configurable biome blend radius size
Configurable biome water surface and fog colors
Faceless pumpkins from 1.13 (can be carved using shears)
Fish buckets (works with any Material.WATER bucket)
Gradual air replenishing mechanic from 1.13
Items and xp orbs float on water
Levers emit redstone dust particles while powered
Pumpkins can be placed without a block below
Toggleable enchantment glints for potions, xp bottles, and dragon's breath
Translucent water bottles
Translucent xp orbs
Water particles (splashes, bubbles, etc) apply water biome colors, and respect modded fluid colors
Vanilla's mushroom blocks, stems, and hyphae are craftable and silk touch-able
Vanilla water buckets now use the forge bucket renderer to be consistent with modded buckets

Planned Features (in order of priority):

Using this mod alongside Aqua Acrobatics is highly recommended for the best experience!

If you're a modpack developer wanting to add this mod to a CurseForge exclusive modpack, use File Director.

AssetMover can cause missing textures in certain cases. If you experience this, install CensoredASM to fix it!

This mod was originally made for the 1.12.2 Ocean Modjam hosted by the 1.12.2 Modding Coalition

External resources