Sea water is

acidic
alkaline
neutral
hypotonic

Sea water is slightly alkaline, with a pH of 8.1 to 8.2. This is because sea water contains a high concentration of dissolved minerals, such as sodium chloride (table salt), magnesium sulfate, and calcium carbonate. These minerals react with water to form alkaline solutions.

Acidic solutions have a pH of less than 7, while alkaline solutions have a pH of greater than 7. Neutral solutions have a pH of 7.

Hypotonic solutions have a lower concentration of solutes than the cell’s cytoplasm. This causes water to flow into the cell, which can damage or kill the cell.

Hypertonic solutions have a higher concentration of solutes than the cell’s cytoplasm. This causes water to flow out of the cell, which can also damage or kill the cell.

Isotonic solutions have the same concentration of solutes as the cell’s cytoplasm. This does not cause any net movement of water into or out of the cell.