Sea Pickle is a small, stackable, light-emitting aquatic plant that can be found in warm ocean biomes. It can be placed on the top of most solid blocks under water, emitting light and increasing in luminance with each additional pickle in a block, up to a cluster of four. Players often use it to illuminate underwater structures or to farm lime dye, as it drops itself and can be smelted to produce the dye.
This item has no numerical item ID, therefore you must use the item ID to spawn the item. Numerical item IDs were removed in Minecraft version 1.13.
The item id for Sea Pickle is minecraft:sea_pickle
The item ID for Sea Pickle is minecraft:sea_pickle
This is the spawn command to give yourself Sea Pickle in Minecraft which includes the Minecraft /give command. If you are using the Essentials plugin you will need to use /minecraft:give instead of /give