A stye is an infection of an oil gland in the eyelid. It produces a red, swollen, painful lump on the edge or inside surface of the eyelid. Styes usually occur closer to the surface of the eyelid than do chalazia.
The most abundant salts in the ocean are chlorine, sodium, magnesium, sulfur, calcium, and potassium. Ocean salinity is affected by multiple factors including ice melt, inflow of river water, evaporation, precipitation, wind, wave motion, and ocean currents.
In the Caspian Sea the greatest variety is within fish and crustaceous species. These organisms, due to their very good osmoregulatory abilities, are capable of living in a very wide range of salinities ranging from fresh water up to salt concentrations even higher than those found in the ocean (Zenkevich, 1963).