Dododex
ARK: Survival Evolved & Ascended Companion
First of all, I usually find them near a body of land. I found one in south…

First of all, I usually find them near a body of land. I found one in south zone 2 or south zone 3. And please only tame them the same food, I was taming one with raw fish meat, but ran out of it so I fed with cooked meat, and lost all taming progress. It's filled with mantas outside but I was lucky to only have 1 manta surrounding it, and use itchy to avoid mantas since riding aquatic animal will make you avoid dangerous creatures, even meg's which I tested.
Oh and another thing, there is this creature on The Island where when you click, it gives you tons of prime fish meat, I used it when I was taming with fish meat but then lost some taming progress. So definitely find one of those things where it gives you raw prime fish every 10 mins, it gives you 40+ btw
More Basilosaurus Utility Tips
Reasons to tame a basilo:
1. Water tanks. They can take damage and dish it back out. I killed a moss with mine.
2. Fast health regeneration near surface. Fight any surface predator and barely lose any health
3. Makes oil.
4. Keeps you warm in cold places and cool in warm ones
If you don’t have a basilo, tame a basilo.
King of the sea. A tuso or mosa will do more damage but you can not be knocked off a basil making them essential for underwater caves which are full of jellies, Eels and even tuso's. They are also the perfect size to navigate through them without getting stuck or having to dismount. If you have a Baryonyx they are very easy tames, just use the AoE spin attack to kill all the Manta's and you can passively tame it at your leisure. Combine their oil with organic poly and water in a cooker to make soap which doesn't expire and can be ground back into oil and organic poly when you need it.