Made a base on herbivore island and it was SO annoying that they kept stomping or just walking all over my things. Eventually tried killing one and it failed. Lost half my tames. War was on. I learned that while they can swim, they cannot fight off sharks or water species as long as your in sight line still. Killed three of them by leading them into the ocean and hovering above with a pteradon whilst the sharks did the work for me. Still got prime meat, and the shark only managed to destroy one of the body’s. Easiest way to rid yourself of these humongous pests. Shoot from a good length away with cross bow, and if needed swoop in and nip them on the head with a flier to keep their attention on you. Happy flying, don’t die :)
Man I kinda hate these guys. One of these guys killed my pteranodon that was real powerful and another almost killed my Sarco. But I can get why people like these guys they’re gigantic and they’re mostly friendly.
Tip : Don't put wooden / metal spike walls near your base if you live in an area with a lot of sauropods.
this is why : since they like to wander around, There's a chance that they will get stabbed by the spikes when they wander near your base. And they will get mad at you, kill your tames, and wreck your base.
so please be careful and think twice before setting up spikes near your base.
In the past I was has a base near what i normally call "Bronto active spawn" , aka herbivores island, and to be honest these guy don't hard to kill in casual,ease difficulties, use shotgun and riffle (both are primitive version) if careful can defeat Bronto quite ease just don't kill it while it with friends, I don't know if this is just my self but, it some how has similar machanic to triceratops in that they all attacking me/you.