Spoiler:

Equipment Name: Shirauo (Ice Fish)
Equipment Description: The weapon is a cross between a Leiomano and a traditional Hawaiian hook with a rope binded around the handle that is tied off on the ends. The excess rope drapes off the weapon at approximately 30 feet long, this can be used to swing the weapon around or use it as a hook to latch onto something. The weapon is made from the bone and teeth of a Legendary Seaking of the same name, as such its strength and durability is comparable to that of even the best forged steel.

Shirauo is primarily used as a slashing weapon by striking with the teeth embedded into the back side of the hook and ripping downwards to gash open the enemy. While the hook side is mainly used when the weapon is wielded by the rope portion and swung about.  

Equipment Grade: Ryo Wazamono

Equipment Name: Sharkdusters
Equipment Description: A pair of Hawaiian knuckledusters with shark teeth embedded into them. The handle is made from an extremely durable coral, while the teeth belonged to a giant black shark that is commonly found swimming in the waters outside of fishman island. These are kept tucked into his sash, hidden from view.

Equipment Grade: Skillful