Another warning.

[JTG]

As a chemist, it is my duty to inform you that literally every aspect of your description of sodium hydroxide is incorrect.

Sodium hydroxide, commonly known as lye, is an inorganic compound which is a white solid at room temperature. As a strong base it completely ionizes in water, so claiming that it is found in sea water is misleading at best; sodium ions are certainly present in large quantities (3.1-3.8% of seawater by mass), but the concentration of hydroxide ions is orders of magnitude lower, and evaporating seawater would only give trace quantities of sodium hydroxide.

For anyone interested, high-density polyethylene (HDPE) is the recommended storage medium for strong alkali, both in solid and liquid form. Concentrated alkali solutions will slowly etch glass, and over significant periods of time (years) can cause the failure of glass bottles.