If no weapon is equipped or its charges are already full, you cannot pick up ammo.
Ammo
Ammo is an ammo crate you can find during a dive. Swim up to it on the seafloor to refill charges for the weapon currently equipped by the diver.
Ammo is an ammo crate you can find during a dive. Swim up to it on the seafloor to refill charges for the weapon currently equipped by the diver.
If no weapon is equipped or its charges are already full, you cannot pick up ammo.