Mod Mermaid Tail – will add a special necklace to the game that will turn you into a mermaid, the player will have a mermaid tail when it gets into the water, it looks pretty cool and will allow you to stay under water for as long as you like. I didn’t notice that the player started swimming faster with the tail, but infinite air is very useful.
How to install the mod:
Install all additional mods if specified.
Download mod and copy to .minecraft / mods
Launch the forge version of the game in the launcher.