Atlantean Prismarine to Luminescent Prismarine (if this name is considered i recommend this block glows kinda like how a glow squid does)
Atlantean Sea Lantern to Surge Lantern
Atlantean Power Repeater to Power Repeater
Atlantean Tripwire Hook to Aquatic Tripwire Hook
Atlantean Crystal to Flow-Water Crystals
Atlantean Power Torch to Power Torch
Atlantean Power Dust to Power Dust
Atlantean String to Aquairel String
Atlantean Fire Melon Fruit to Fire Melon Fruit
Atlantean Fire Melon Fruit Spiked to Spiked Fire Melon Fruit
Atlantean Fire Melon Seeds to Fire Melon Seeds
Atlantean Fire Melon Spike to Fire Melon Spike

Atlantean Crab to Rubyclaw Crab
Atlantean Jellyfish to Aquariel Jellyfish
Atlantean Shrimp to Glittertail Shrimp
Atlantean Seaorse to Thalassian Seahorse

Remove Calcite Block (Since Mojang added one already)
Remove Atlantis Portal Block

Atlantean String Creates Water Sources
Coconut Texture is Upside Down
Coconut when placed will be placed on the face of the block instead of the bottom part of the block