Jungle World is and add-on that will completely transform all of the terrain (including ocean) into jungle biome. You can use this addon for survival or other. This addon will generate jungle biome infinitely from spawn to the farlands!
Below are screenshots of what the jungle world addon looks like
Desert Biome with Village
This add-on is also compatible with my other addon called Better River
check my profile for Better River addon
Make sure to turn on all of the experimental gameplay
Also, it is recommended to start a new world with this add-on, or your world may looks like this if you don't.
If you make review, gameplay, or showcase about this add-on, don't forget to put the original link (mcpedl page).