"How's the water?"

Potion of Underwater Breathing (#4/31, #278/365) [EA:V2] (Potion) 

Stepping out onto the gangplank, she leapt off the end. She dropped like a stone into the sea and the waves closed over her head. The weight of her armour and sword dragged her down towards the submerged reef. Her lungs began to ache until, unable to fight the urge any longer, she took a gulping breath. But what's this? Miraculously she was still able to breathe - just has she had hoped. She breathed a sigh of relief and moments later her feet touched the seabed.

- Death of a Pirate, Khlosta of Anghelm  

Traditionally, the Potion of Underwater Breathing takes the form of a sea-green glass bottle shaped like a fish, and was made by Sea Sprites to give to valiant heroes who could aid them on underwater quests. A crazed pseudo-scientist Mendelev Quicksilver, of the Brotherhood of Alchemists in Chalannabrad, claims to have perfected a more recent iteration, much in use by the whalers and Sea Nomads of the Eelsea. When drunk, the potion enables the imbiber to stay underwater without needing to breathe. They can walk, swim, fight and perform all other actions as per normal. The effects typically last for 2-12 hours before wearing off, the imbiber will generally feeling a noticeable tightening of the throat that indicates only thirty minutes of air are remaining.

Price 7gp per Potion