Enlightend

The Ennegel grove is a biome based off of bounciness, with bouncy blocks of ennegel that make up the trees "leaves" and a good portion of the biomes floor. New plants called "springleaves" are scattered about, which will launch the player at a high velocity depending on the direction of the springleaf. There's also an indigo colored wood-set called and few other decorative plants. 

A New food source called Bouncer Nuts grow under the indigo tree branches. These will eventually become too heavy and fall off of the tree, breaking open into a few bouncer "mobs" which will become squished and dropped as an edible item after about 10 seconds. Squished Bouncers eaten or fed to ringlings, but they cannot be replanted and will only grow off grown indigo trees. Furthermore, another new mob spawns here, called the ringling. The ringling will eat bouncers dropped from nuts or fed by hand from the player. When ringlings are fed bouncers, they become full and will begin digging through the indigo eylium below them, they will occasionally dig up ancient roots and rarely a rooting blade. Ancient roots can be eaten to submerge yourself one block into the ground, it can also be brewed into a rooting potion, which causes this effect for a longer duration. The Rooting Blade will apply that effect on hit for about 3 seconds.

The enderneath is an upside down ancient overgrowth, hidden below the end islands and lightly based around radioactivity. Lots of irradium ore generates within the biome and new threats called "stalkers" lurk here. Stalkers are very tough mobs, some of the toughest in the game as a matter of fact! They'll try to knock you off the platforms in the enderneath giving you an effect called "burdened" in the process, which will greatly increase your falling speed. Furthermore, killing a stalker will cause it to drop stalker its meat and ocassionally its teeth. Stalker meat is a very good food source since the stalker is a challenge to slay, and the stalker teeth can be crafted together with bismuth ingots to make a serrated hook, which has extra range and will bring mobs to your position when attacked.

 

glow gourds, azure berries, and cerulean stalk are also found only within this biome. Glow gourds grow down from cerulean vines, and overtime they'll sprout open with fronds off the sides, which allows them to be harvested slices that cause radiation when eaten. Azure berries grow off of lichen-like vines. These berries are very useful as they provide levitation to any player that eats them, letting you save yourself from a fall or escape from the enderneath. Lastly, cerulean stalk can be found here, which is an opposite of bamboo that grows downwards and can be turned into a light blue wood-set.

The ooze seeps is a biome based around ooze and bubbles, with mobs and blocks to fit that theme.

 

Ooze can be found here, which is a new liquid found exclusively in the end. Ooze has many properties such as :

• Items, projectiles, boats sliding across the ooze surface.
• Most entities will stay completely still and not sink or float while in the liquid.
• You cannot drown in the liquid.
• Going in the liquid applies a new effect called "enderstride" which teleports the player to where they are looking randomly.
• Ooze can speed up the growth of some nearby crops.