Tetanus vaccine can help prevent tetanus disease, commonly known as lockjaw.. Tetanus is a serious disease that causes painful tightening of the muscles, usually all over the body. It can lead to locking of the jaw so the person cannot open his mouth or swallow. Tetanus leads to death in about one in ten cases.
The most abundant dissolved salt in ocean water is sodium chloride. It is a colorless crystalline compound with the chemical formula of NaCl.
Saltwater fishcannot live in fresh water. Fish that live in the salty water of the oceans include bluefish, cod, flounder, sea trout, tarpon, tuna, halibut, rockfish, sea perch, lingcod and yellowtail. Freshwater fish cannot live in salt water. Fresh water contains much less salt than the ocean.