Some taming info:
A tamed tuso can grab these amd a teammate can then feed it bio toxin.
They deal torpor damage.
They have an electric aoe attack that damages and stuns players. While stunned you can feed it if close enough and temporarely use stims and medical brews.
Even with flippers they will outswim you.
Rush in and feed while stunned(use stims and medical brews)
Their electric aoe slows and renders all creutures unable to attack with the exception of the basilosaurus.