Ikelite strobes are the only ones I have found to be dependable enough for professional use in the harshest conditions on Earth.
Strobes You Can Trust

DS230 Strobe
230 watt-seconds of perfect bokeh-soft power. TTL compatible with ultra-fast pro-grade rechargeable battery pack.

DS160 II Strobe
160 watt-seconds of warm, soft coverage. TTL compatible with ultra-fast pro-grade rechargeable battery pack.

DS51 II Strobe
50 watt-seconds in the smallest body for travel. TTL compatible and powered by AA batteries.
Slide to See What Strobes Do
One question we get often is Do I need strobes?

Without Strobes

With Strobes
Filters
12 products
DS232 213Ws Underwater TTL Strobe with Video Light
Sale price$ 1,495.00
DS230 213Ws Underwater TTL Strobe with Modeling Light
Sale price$ 1,295.00
DS162 160Ws TTL Underwater Strobe
Sale price$ 1,295.00
DS160 II 160Ws TTL Underwater Strobe
Sale price$ 995.00
DS51 II 50Ws TTL Underwater Strobe
Sale price$ 495.00
Underwater TTL Strobe Bundle for Olympus Tough TG-series cameras
Sale price$ 904.00
NiMH Battery Pack for DS230, DS162, DS161, DS160, DS125 Strobes
Sale price$ 250.00
DS230 Strobe Front with Modeling Light
Sale price$ 1,050.00
DS160 II Strobe Front
Sale price$ 750.00
Smart Charger for DS161, DS160, DS125 NiMH Battery Packs
Sale price$ 45.00

Setting up Strobes with a DS Link TTL Converter