Tylosaurus - The Venomous War Submarine

Ideas- Give it an armored saddle similar to the andrewsarchus but make it a fully enclosed saddle that provides oxygen and has a torpedo launcher on it or make it so you can build inside the saddle as if its a small submarine 

Wild- It would spawn in packs of 2 in the deep sea 

Tame- To tame it you must lead it to the surface where it slows down from the pressure difference where it would be able to be knocked out and tamed but im open to ideas

 Domesticated- It would be like a slightly smaller mosa that's faster and with a better turning circle and is just all around more responsive with movement. Its saddle would provide oxygen have a mounted torpedo launcher and maybe be buildable to make it like a smaller submarine 

Harvest-It would be proficient in farming oils from basilosaurus due to its large sharp teeth 

Feel free to leave ideas in replies 

Summery of ideas from replies 

• Venomous bite/secretion to let it stay on land as long as it has venom and produce a narcotic elixir to keep creatures out cold
• Turbines/engines to make it like a tropeo of the sea in terms of speed
• Undersea artillery cannon with a cruise missile   
• Buff/Debuff Roar to make it an yuty of the seas and help in undersea boss fights
• Immunity to cnidaria 

Edit- Other ideas from replies are to make it an almost yutyrannus of the sea where it can buff creatures in the water/ another would to be making in an underwater artillery cannon where you can shoot out a guided missile that explodes after a certain amount of time/ could also have turbines or engines on the saddle that make it like an undersea tropeo/ would also be immune to cnidaria due to the rubber in the saddle/ yet another idea would be to make it venomous like its modern-day relative's of komodo dragons and sea snakes, the venom could be used as an explanation or timer for how long the tylo would be able to beach itself, or it could passively build up venom to make an narcotic version of  sanguine elixir where it instantly fills half a knocked out creatures torpor bar, would ofc also come with an venomous alt attack/

Edit of taming- Like stated above keep the dragging to the surface but instead of just bringing it to the top of the water make it beach itself like modern-day orcas do when hunting, then you must trap it and prevent it from returning to the depths this would ofc also mean that when tamed it would be able to beach itself but wouldnt really have much maneuverability on land

^ Art done by Helios