Q: How can I obtain Shell?
A: You can obtain it by Underwater Treasure or other events.
Q: How to use Shell?
A: Open backpack interface, click Embed, select the gear you wish to embed and place the shell in the slot.
Q: How to synthesize Advanced Shell?
A: Advanced shell can be synthesized via Low level Shell. For example, 2 Lv.1 Hit Shells can be synthesized into 1 lv.2 Hit Shell
Q: How to recover embedded Shell?
A: Shell removal can be done on the shell embedment interface. Just click to remove it.
Q: How many Shells can be embedded into the gear?
A: Blue gear can be embedded with 3 kinds of Shells while purple above quality gears each can be embedded with 6 kinds. Each gear can only be embedded with one kind of shell.