AnswEr :
⠀⠀Beside water Sodium Chloride ( NaCl ) is found most in seawater .
More Information :
- Sodium constitutes of 1.94 % of all the constituents ,
- Followed by the Chloride which constitutes of 1.08% .
- Minerals like Potassium (K) , Iodine (I) , Magnesium are also found in seawater .