On ARK Mobile these guys do not attack rafts accirding to the wiki page.

Me and my tribemate were heading back from herbivore island and an ALPHA JUST DESTROYS OUR ENTIRE RAFT AND IN TWO CHOMPS

-Bizarre

This thing killed me and my friend SOO many times and when we finally killed it gave us a crappy pirate hat REALLY!!

Is it just me or that when I was on my plesiosaur on ARK mobile it does no damage to my plesio whatsoever also my plesio can kill tusos so ye

Death to the lead also run like hell

They are passive

Chang my mind

I ran in to an alpha trying to farm penguins your best bet is to head towards the shores

Just now encountered one in mobile.

Attacked me all of sudden since i got green perfumed by sea snail... Just when my Lazarus chowder almost finished.

Luckily I'm using my lvl 130 Basilo, so it's not a threat. But boi oh boi, colored me surprised, i was scared silly back then.

For those who said he won’t attack you at all well it actually did attack and hunt me and my itchy after I dismounted couple meters away from it so cut the cap about this thing being herbivore it ain’t lmao I was able to get its meat after killings the megs around it first with my itchy then attacking it and getting a lot of fish prime meat

A person said they never found a alpha of these things when I found two one a normal and one alpha I said this because i felt like it and it may seem not nice but I’m trying to not say it mean

You cant go right beside shore or in the middle with a raft if these are there. If you have a house on your boat they'll probably miss but if you dont and their following you for long, your dead. You can use a motorboat to easily outrun them. They are near herb island so go right beside shore there, because theres no sarcos.

So I thought they were as big as the ichty’s. DEFINITELY NOT TRUE!!!

On mobile these are neutral and their hitbox is shit so theres a 0.1 chance they will actually do dmg to u

If you see it run or you and your boat will be gone

A motorboat can outrun it, just make sure to have gasoline. Motorboat is unlocked at lvl 57, and you need: 250 wood, 1200 metal ingots, 180 fiber, 150 obsidian, 400 polymer and 60 black pearls.

Who else tried to tame one with a crossbow as a beach bob

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.

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.

To stop the confusion the big fat whale can’t deal damage on mobile or eat ur boat and it’s not aggressive on mobile too

I found an alpha whilst on a raft. It was nearly beached then turned around & one shot destroyed my raft. Had this happen a few times & it comes out from nowhere.