Aqualuma’s Gen 4 FF12 underwater LEDs can be mounted on any flat surface when through-hull fittings aren’t an option.

Available in Brilliant White and Ultra Blue, the lights feature higher output, built-in thermo control, a self-contained fitting inside a polymer housing and two-wire installation. The lights draw less than 2 amps at 12 volts DC and 1 amp at 24 volts DC. $547. Aqualuma, Deerfield Beach, Florida, (954) 234-2512. aqualuma.com

This article originally appeared in the August 2016 issue.