Anthony Hickox sadly passed away.
deadline.com
Hickox and Seagal did Submerged together. Although Don Fauntleroy was flown in to direct Seagals scenes (because Seagal refused to work with Hickox because of creative differences), Hickox did get the director's credit.

Anthony Hickox Dies: Director Of Horror Films ‘Waxwork’ & ‘Hellraiser III’ Was 64
Anthony Hickox, the British director known for horrors such as Waxwork and Hellraiser III: Hell on Earth, died October 9, aged 64. Hickox had spent his recent years in Romania, where police found h…

Hickox and Seagal did Submerged together. Although Don Fauntleroy was flown in to direct Seagals scenes (because Seagal refused to work with Hickox because of creative differences), Hickox did get the director's credit.