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.
The most common salt water aquarium eel is the moray, a fish who makes a great centerpiece. Moray eels are big, and many species are colorful. Feeding time is a great opportunity to to see your eel in action or show it off. Just make sure you feed your eel the right way.