tats glow due to ultraviolet reactive inks. Under the correct lighting reactive inks light-up similar to glow sticks or black-light posters. White UV ink tats are almost undetectable in normal lighting, making them a choice for subtler tattoos
Artist Tattoos Tools Of People’s Professions On Their Skin
A Wave is symbolized as one of the strongest forces on earth (Strength). also if you read more into it, its about faith, a wave is you against mother nature, you cannot control it, you just have to put your faith into her.