Cramps refer to the strong, involuntary contraction of muscles, often caused by over-exhaustion, swimming for too long, or sudden exposure to cold water. When a cramp occurs, one should immediately get out of the water and dry their body. If in deep water or experiencing severe leg cramps that prevent swimming back to shore, stay calm, call for help, or float on the water surface while controlling the affected area. Often, after some rest, the cramped muscle will ease itself, allowing the swimmer to get back onto the shore for further rest.
The treatment for cramps usually depends on the location of the cramp and is handled accordingly.
Finger cramps: Make a fist with your hand, then forcefully spread your fingers open. After opening, quickly make a fist again. Repeat this several times until the cramp subsides.
Palm cramps: Use the other hand to... (It seems like the text cuts off here, but the idea would likely continue with a method to stretch or manipulate the palm to relieve the cramp.)