If you are annoyed by cnidira(jellyfishes) tame a basilosoraus or tusso , basilo is easier just kill the mantas surrounding it (using sarco or baryonx , meg) and feed it exceptional kibble or prime meat (raw meat is fine as well) the use the basilo to fight the jellyfishshes since they can't be stunned or shocked , killing jellyfishshes becomes easier with the basilo