Underwater Combat

A fight underwater follows these rules.

Impeded Weapons

When making a melee attack roll with a weapon underwater, a creature that lacks a Swim Speed has Disadvantage on the attack roll unless the weapon deals Piercing damage.

A ranged attack roll with a weapon underwater automatically misses a target beyond the weapon's normal range, and the attack roll has Disadvantage against a target within normal range.

Fire Resistance

Anything underwater has Resistance to Fire damage (explained in "Damage and Healing").

Damage and Healing

Injury and death are frequent threats, as detailed in the following rules.