It’s not all that surprising that magnets work underwater. Light and electricity don’t seem to have much trouble passing through water. It doesn’t seem like it would be magnetic but it turns out water, and all matter, can exhibit magnetic properties if you put them in a big enough magnetic field.Click to see full answer. Furthermore, what happens when you put magnet in water?Diamagnetism occurs when certain nonmagnetic substances come in contact with a strong magnetic field. The shifts of electrons within atoms in water create their very own magnetic fields and when a strong magnet is applied the diamagnetism of the water in the frog caused it to repel the magnet’s field.Beside above, can a magnet pick up steel paperclips in water? Magnets have the ability to attract certain metals like iron and steel. Metal paper clips are made from steel and should be attracted by a magnet. But can a magnet attract a paper clip through a liquid like water or even through a solid? Fill a clear plastic cup about 3/4 full of water. Herein, do magnets lose their magnetism in water? No, not really. In cold water, the magnetism changes very little. In hot water, the magnet itself becomes weaker, although the water hardly magnetizes.Do magnets work forever?Theoritically a magnet will have its magnetic property Forever. This happens because if you keep a magnet without opposing it’s magnetic force and at a temperature of 0K then it will retain its magnetic force field forever.