Dododex
ARK: Survival Evolved & Ascended Companion
Utility Tips

What is a basilosaurus used for? basilosaurus battling strategies in ARK: Survival Ascended & Evolved.
Went down in the depth with my lvl 440 imprinted Basilo equipped with ascendent saddle. Fought a lvl 110 alpha mosa with 160k HP in a head on fight (aka standing still and holding down attack). Killed it in about a minute, and my Basilo lost just 1k out of 70k HP.
A high lvl imprinted one with a good saddle is completely OP, takes a while to breed and raise tho.
Just killed a low level alpha mosa in a head on 1v1 on my lvl 250 Basilo and only lost 5k health out of my 20K using a primitive saddle. If you have a good saddle for it and pump enough points into its health and melee you can definitely overpower every wild creature in the ocean with a basilo, including high lvl alpha mosa.
These creatures are amazingly useful even UNtamed. If you kill them, they give you at least 300 oil, each. When tamed, they regen ridiculously quickly at the surface, and are rather good for getting anything aquatic. Nothing beats a Basilo for underwater fights either. Also, you can name them Pickle Rick and Pickle Rick is the best, so, win win.
I play Single player and tamed this creature lvl 120 as my first fully aquatic creature. I fully upgraded saddle at upgrade station and this thing is apsolutne monster. Not any of other sea creatures is even close to killing it. Kills mosas without any problem, receives very little damage with saddle armour. Personally I think of it as best sea mount because of it's immunity to stuns and grabs.
A very amazing creature for the water if you have a high level one stated with health and melee it can kill almost everything the only thing I would watch out for is high level alpha mosa otherwise they can be electrocuted by anything, electroflorus, and jellyfish no more, also tuso's can't grab them.