Direct answer
Craft Or Obtain A Diver’s Endurance Flask → Use A Diver’s Endurance Flask
Treacherous Waters

Result
Craft Or Obtain A Diver’s Endurance Flask → Use A Diver’s Endurance Flask
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Craft Or Obtain A Diver’s Endurance Flask → Use A Diver’s Endurance Flask

Craft Or Obtain A Diver’s Endurance Flask → Use A Diver’s Endurance Flask

Craft Or Obtain A Diver’s Endurance Flask → Use A Diver’s Endurance Flask
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Related content · quantity 1 · Effects: Stamina Depletion Swim Sprinting: -20%. Acquisition: Alchemist. A flask brewed from rare underwater materials, easing the strain of every powerful stroke. Reduces stamina drain while sprint swimming or sprint diving.

Related content · quantity 1 · Effects: Mana: 120. Acquisition: Veilwater Basin, Underwater. These algae may look inconspicuous, but they are highly versatile.

Related content · quantity 1 · Effects: Health: -80; Stamina: -70. Acquisition: Veilwater Basin, Underwater. These are the buds of an algae plant. They're inedible when raw, but can be dried.

Related content · quantity 1 · Acquisition: Veilwater Basin, Underwater. The natural iridescent material that pearls are made of, it can be found lining the inside of certain shells and valued for its luminous shimmer.

Related content · quantity 1 · Acquisition: Veilwater Basin, Underwater. A gorgeous pearl. The magnetic pull of its lustrious shine is only enhanced by its rarity.

Related content · quantity 1 / Related content · quantity 1 · Output: Diver’s Endurance Flask × 1. Ingredients: Algae × 10, Algae Buds × 10, Mother-Of-Pearl × 10, Pearl × 1. Entry: Alchemist.

Related content · quantity 1 · Output: Mother-Of-Pearl × 5. Ingredients: Pearl × 1. Entry: Mill.