This is a amazing thing! Like really, For example when you tame a Wolf, you can feed it biotoxin and it Will increase the torpur up to 80. Thats how i tame most animals, though its easier when you're in a tribe, they might have baryonix's or even a basilisc! It'll be much easier when you have a tribe and many biotoxin, trust me.
Use these for taming something you aren’t experienced in taming, also depends on the torpor drop. I personally use only this to keep stuff I’m taming down, easy to hunt at south zone 3 on Mobile, as cnidaria spawn near the shores, easily killed with either a pike or spear. Just one thing, never use a low level mosa, any amphibious mount that aren’t strong or tanky, a dunkle, any weak aquatic mount for that matter to kill jellyfish, if you already think that the eelectrophorus are tough for you. A basilosaurus, you on the shore with a spear, a tusoteuthis, a high lvl tanky mosa that can one bite everything or a tribemate would do.
I use to go to the beach, swim out a little bit until it agro. Then swim to land again and the cnidarias are following me to land. When it I am standing on land it stops. Then I can easily kill it without taking any damage.
if you dont have any powerful aquatic creatures, hop on a raft and take it to sea (preferably at night when the jellyfish are more visible). use a crossbow from the raft to aggro and kill them. good aim practice.