A shulker shell is an item in the game Minecraft that drops from a creature called a shulker. Shulkers are found in End Cities, which are structures located in the End dimension. When defeated, a shulker drops one or two shells, which can be collected by players. Shulker shells are primarily used to craft shulker boxes, a special type of storage container. Shulker boxes retain their contents even when broken, making them highly valuable for organizing items and transporting them easily. This unique feature makes shulker shells a sought-after resource in the game.