According to the query of keeping in good health, if the light cannot be turned off, it is due to the following reasons:

1. switch is damaged: due to improper use or aging, the floating light switch is damaged and the lights cannot be turned off. You can try to replace the new switch or contact the manufacturer for repair.

2. Damaged light bulb: If the light bulb is damaged, the light cannot be turned off. You can try to replace a new light bulb or contact the manufacturer for maintenance.

3. Circuit failure: due to improper use or aging, the lamp can not be turned off, resulting in the circuit failure of the lamp. You can try to check whether the line is normal or contact the manufacturer for maintenance.

Seagull brand float lamp is a kind of lamp used for fishing at night, which can illuminate the float and the surrounding waters, making it convenient for fishermen to observe fish.