Blue LEDs yog cov feem ntau siv rau hauv qab dej teeb pom kev zoo vim lawv muab lub ntuj thiab txias ci uas illuminates lub underwater ib puag ncig yam tsis muaj teeb meem nyob rau hauv dej. Lawv kuj muaj qhov tob tob tob, tso cai rau lawv kom pom cov dej tob. Txawm li cas los xij, lwm yam xim xws li ntsuab, dawb, thiab UV kuj tseem siv tau nyob ntawm daim ntawv thov tshwj xeeb thiab cov nyhuv xav tau.
