Squids and Glow Squids
Squid and Glow Squid re-model, with several variants (Screenshot taken in 1.3)
Squidward
Villagers look like Squidward in oceans (Screenshot taken in 1.5)
Sunken Skeletons
Skeletons can have kelp and coral on them in oceans (Screenshot taken in 1.3)
Colourful Spore Blossoms
Variated Spore Blossoms (Screenshot taken in 1.1)
Soul Magma Cubes
Magma Cubes become blue in the Soul Sand Valley (Screenshot taken in 1.2)
Jack o' Lantern Faces
Variated Jack o' Lantern faces (Screenshot taken in 1.2)
3D Sugar Cane
Sugar Cane is 3D (Screenshot taken in 1.2)
Pumpkin Faces
Variated Pumpkin faces (Screenshot taken in 1.2)
Icicles
Pointed Dripstone becomes icy in cold biomes (Screenshot taken in 1.2)
Frozen Slimes
Slimes become snowy and icy in snowy biomes (Screenshot taken in 1.2)