イージスシュリンプ [aegis shrimp] in Japanese.
A Realm Reborn

Item Level: 26, Rarity: Grey
Buy: - (sell: 8-9 gil)
Gather: Fishing / Lakes, size ? ilms
Fishing bait: Bass Ball, Brass Spoon Lure
Fishing locations: Central Thanalan (Lower Soot Creek lv10, Unholy Heir lv15)
Use: -
Desynthesis results: Fine Sand x0-1, Water Shard x0-1, Clear Demimateria I x0-1
Type: Seafood, Stack: 99, Unique: No, Untradeable: No, Desynthesis: CUL
Description: Whereas other shrimp shed their old exoskeletons each summer in favor of new ones, the aegis shrimp simply adds a new layer every year until the shell is so hard, not even a blow from a trained pugilist can break through it.
Category: Item