Best way to tame if u are playing alone or with a friend. Tame a shark quickly. Make a sadle and ride it into the jaws of death. Hop off when you are grabbed and quickslot 0 the 50 black pearls and charge carefully into its mouth (if u get to close it will leave your pet for you) then you have tamed a fellow squishy.
Use a Mosa to tame this beast. Let the Mosa get grabbed wait a couple seconds get off feed it black pearls. Have your mosa on follow lowest, swim a bit away from the Tuso after feeding it, when the Tuso lets go the Mosa will swim to you. Repeat until Tuso it tamed. Super easy!
You need two people, one for feeding the black pearls and the other to feed the turtle that is in the grasp of the Tusoteuthis, with sweet vegetable cake for the health and to feed it stimulates berries as well