Their path finding is easy to defeat. The simple method is to not go into open water, but if you must, just reverse into them. They turn wider than your raft and you can stall them until you reach the shallows. Also they sometimes don’t aggro on players, so try jumping out of your raft and swimming until you can place another raft.
I’m seeing a lot of fake tips about this character creature. Because I have also seen Leedsichthys in Ark Survival Evolved on Mobile. I’ve never seen an Alpha version of this Leedsichthys. They give a lot of meat. All you have to do is swim near them. You should be wearing a Diving Suit! You’ll get a pop up saying take meat. They get aggressive only if you punch them or shoot them with any weapons and if you attack them with any of your underwear tames. They will attack you, but they won’t do any damage at all to you. Since it’s a Herbivore. Unlike Carnivorous creatures. I’m sure that they’re still not officially tame. Only if you have bought the Cheat Console for Single Player. I really hope that people stop lying in the tips. Really help each other out because Ark Survival Evolved isn’t an easy video game to play in Single Player. It’s just as hard in Multiplayer. Enjoy the real tips of this creature. Please give this a ^ You’re welcome! :-)
While playing on The Island, I have found that they spawn in the glaciers the most often (I have ran into two there on one trip.) . We have two rafts, which they will destroy. I believe that they are also afraid of the player(s), so that would be helpful to know when you encounter one; if you do. If one does attack your ship and you don’t have the weapons to fight or are not looking to fight it, go to the nearest glacier and beach your raft. You can dip into the water for a second and check to see if it is fleeing, as it is not looking for a fight. Wait for some minutes, (preferably 5) and check again before leaving. It is always good to have extra materials for a new raft, and for repairs. If you are elsewhere and have ran into one, (which I have not, so I can’t give a proper tip) I would just abandon the boat altogether, if not near land. We bring flying mounts on own rafts, so that is a quick escape from other fish that will eat you. Or, just scrap the boat altogether and get a pelagornis.