Attach Lumilink with a fully Charged 10440 Lithium Battery and Shoot For A good long while. Mount it on the camera housing's fiber optic port,or connected with the fiber port on housing through a optical fiber Cable.
Lumilink amplifies and encrypts the signal received from the camera housing's internal optical flash trigger, 
and then forwards it through optical signals.
Lumilink is capable of extending the range of optical signal transmission,
With a signal transmission distance of 5 to 8 feet in shallow water and an optical signal emission angle of 160 degrees without wires, this will increase all Creative Possibilities
See the Wireless Underwater Strobe Package from Marelux Mounted with Canon R-5 Camera
Rent or Buy the Apollo Strobe, Lumilink Module and Canon R5 or sony A1 Underwater Housing from Hollywood Divers. Lumilink is Somewhat Adaptable to other brands of Housings with a small Fiber Optic Cable and a Mounting Ball attached to the Lumink Module.