Shetland, Tonis Chandris 170826

I have made several trips to dive Shetland and this was a first visit to this wreck. Look for the boiler, a huge triple expansion or compound engine (not sure which) drive shaft, propeller, rudder and steering wheel. Massive nudibranch at 3 mins 50 secs. If you know the variety please let me know. Edit we think it is Okenia Elegans, the Elegant Sea Slug. Video was shot using a GoPro 9 in 4k 60 FPS and a pair of 18,000 lumen video lights. We were diving off Valhalla skippered by Hazel Weaver.