Magnesium burns well underwater. Anything will burn underwater if it has a proper amount of oxidizing material.
alumin
Sodium is a metal that burns readily underwater. When exposed to water, sodium reacts vigorously, releasing hydrogen gas and generating enough heat to ignite the hydrogen, resulting in a bright yellow flame.
To walk underwater, you need metal wario.
Aluminum
Metals that react well with water: Sodium - fizzes Potassium - burns Caesium - explodes Metals that react well with acids: Magnesium
Magnesium
oxide.
One can purchase an underwater metal detector at a local all round hobby store or at a metal detector store. One can also buy one on various webshops like Amazon or eBay.
He turns to metal when he is metal he can walk underwater and is invicible for a limeted time.
magnesium
Metal can quickly rust when it is exposed to water and oxygen, which causes a chemical reaction that forms rust on the surface of the metal.
Magneseum. an Alkali earth metal