and the reason why the body feels afloat, the water is at a controlled temperature of 93.5 degrees, there is so much salt that your body floats absolutely with no effort the same temp as your skin, so you cant feel anything at all, so your body ceases to sense touch, sound, sight, taste etc
i have an audio clip where joe rogan talks about it, he owns a tank and after listening to the audio you might want to try it out at least once