In real life these were vicious carnivores that would have killed and eaten a human on sight and lived mostly in shallow waters and swam up rivers looking for food they were also twenty metres long, good thing the developers didn't make them more realistic or crossing rivers would be a dream until you have a flyer.

Basilosaurus isn't as hard to tame as you'd think. It may be surrounded by mantas and sometimes megs, but there's a simple solution; Baryonyx.

Tame a Bary, any level will do. Approach the Basilo and use the tail spin attack, it'll stun the mantas/megs and scare the Basilo away for a few meters, far enough for you to take out every threat with a Bary stun-lock without hurting it further. Once they're dead, all you need is swim towards the Basilo, feed it, and follow it around until it's tamed.

Been doing it this way for years with no problems whatsoever, in my opinion it's the best and safest way to tame it. -Hydro

From my testing, it seems like one of these generates 20 oil in ~25 minutes, so that’s a rate of 4/5 per minute. You can refine 6 oil into 5 cans of gasoline, so 4/5 oil per minute would equate to 2/3 gasoline per minute. A fabricator burns fuel at a rate of 1 can of gasoline per 15 minutes (1/15 per minute). So basically, with a single basilosaurus of any level, it will produce enough oil to keep 10 fabricators constantly running simultaneously if you constantly collect and refine the oil it produces. Electrical generators burn gas 4 times slower than fabricators do, so a basilosaurus can produce enough oil to simultaneously and constantly power 40 generators. I wish I knew about this before travelling to the iceberg from my base in the south to gather oil : (

One of The most stupidly overpowered water Dino's following Icthyosaurus

1: passive Oil generator (spoils, sadly)

2: high hp and fast regen at surface (lose hp when deep)

3: hypo/hyperthermic insulation when ridden

4: immune to dismount effects and cnidaria stun

5: drops [__]loads of oil when killed, wild or tamed

6: great semi-battle exploration creature

7: saddle unlocks I think before Argentavis

8: little slow, but able to outrun Meg

9; is sea wiener, make human happy

Basilos, one of, if not, the best aquatic mount in the game. Not able to be stung by the jellyfish, healing quickly at the surface, and for being a whale for ARK's sake. They have tons of weight, damage, and, best of all, the potential for a MASSIVE health pool. I bred a fully imprinted, non-mutated Basilo for the first time today, and after killing an alpha Meg and Leedsichthys, it has nearly 200,000 health. Damage-wise, it isn't too crazy, but it is especially good for an aquatic mount. The only aquatic creatures to rival the Basilo in its capabilities are the Most and Tuso, and possibly the Plesio as well. The Miss was the original King of the Sea, but ever since Jellyfish were added, they have been in a fire need for a TLC. The Plesio is fast, but it doesn't do as much damage and is not as manuverable as the Basilo. That leaves the Tuso. It has a long reach, but Basilos are not affected by its grip. This truly proves they are the King of the Ocean.

A living oil mine and immune to jellyfish and someone who likes to ignore the hug of the Tuso . Yup definitely worth taming and for some of you who don’t know how to tame this kind of Dino then this is how you do it

Step 1: put the item you will use to tame in your hot bar

Step 2: get close to the Dino then tap the item to feed it then keep feeding it until it tame up

I am telling process because I had problems passive taming when I was a beginner

Hope this was helpful :)