It is mandatory to defeat the Puffer Fish, having the ability to be a melee weapon that hit monsters from a distance and thus preventing spikes damages (since ranged weapons can't be used underwater).
|Weapons & Offhand|
|Weapons||Wooden Sword • Skeleton Sword • Scythe • Stinger • Poison Stinger • Iron Dagger • Club • Spiked Club|
|Offhand||Lantern • Skeleton Shield|
|Bows||Wooden Bow • Long Bow • Haunted Bow|