ハンマーヘッド [hammerhead] in Japanese.
Final Fantasy XIV

Buy: - (sell: 158 gil)
Gather: fishing (sweetspot +1, jig angle 4) Cedarwood, Horizon's Edge
Use: Hi-Potion of Strength, Sea Sand, Shark Oil, Water Crystal
Type: Saltwater Fare, Stack: 99
Description: A ravenous shark with a hammer-shaped head it uses to quickly detect its prey. This wavekin is most commonly found living in small schools in the Strait of Merlthor.
A Realm Reborn

Item Level: 29, Rarity: Grey
Buy: - (sell: 8-9 gil)
Gather: Fishing / Deep Sea, size ? ilms
Fishing bait: Heavy Steel Jig, Northern Krill, Steel Jig, Yumizuno
Fishing locations: Western Thanalan (Silver Bazaar lv25), Western La Noscea (Halfstone lv35)
Use: craft Shark Oil
Desynthesis results: Fine Sand x0-1, Water Shard x1-2, Grade 2 Dark Matter x0-1
Type: Seafood, Stack: 99, Unique: No, Untradeable: No, Desynthesis: CUL
Description: A ravenous shark with a hammer-shaped head it uses to quickly detect its prey. This wavekin is most commonly found living in small schools in the Strait of Merlthor, but there have been recent reports of schools containing more than five score of the creature.
Category: Item