This creature is so easy to tame. All you need is:
1. An Ichthyosaurus(these guy won't be attack by any water creature, except the jellyfish)
2. Anykind of meat(I suggest using prime meat and don't use fish meat)
3. Find one of these creature
4. Feed it prime meat(It's a long time between the 1st and the 2nd feed, after the 2nd feed it's fast)
And then you get one of these, just be careful of the megalodons, they will attack right after it is tamed. I hope this is useful for you<3

Dodex fix your stuff takes like 5 mins for hungry again

Don’t actually knock it out its a passive tame. Mine took around 23 meat and 15 minutes for a lvl 70 basil, totally worth it.

I got lucky and was able to find one of these things without mantas near it in the shallows of Herbivire Island...thank goodness, do not use fish meat!!

Fun fact: the first time you feed it, it takes a while. The rest of the time, it’s much faster, don’t worry!

I tamed mine with a baryonyx to kill the manta bodyguards. The time between the first and second feeding interval takes a while, so sit back and grab some coffee while you wait. Regular meat will do as after the second feeding, the interval is only about 10 seconds. Make sure you keep all Megalodons and other mantas away from it while taming. I absolutely love mine for alpha killing and bio toxin farming. Also they get a crap ton of hit points per level up, almost 400.

After first feed on a 150 with kibble it won’t be hungry for almost 5 mins.

Dododex has its stats all wrong the amount of food or kibble is correct but the time is way off.
If you feed a basilo its first feed.
It will take roughly 2-3 mins untill 2nd feed the time is different if it's an evo weekend 3x it takes 29 seconds inbetween each kibble feed

Ignore posts about taming bar going down, you need to tame it using only the food you give it from the start, if you change the type of food you give it, it then resets the taming bar

It takes a while to eat the second time, so don't fret

I don’t know why, but nothing in the sea agrros on the dolphin. So it’s best slowly killing the mantas and then feed the basil

Can apparently fight cnidaria without getting electrocuted

Taming this guys are easy, all you need in an Ichthyosaurs 2 stacks of Raw Meat and a Will to go to ocean bottom. Set your Ichthyosaurs in passive , swim to one and make sure you are on the left side of the basilo so that when you jump off the basilo is in feeding range.
Feed it and jump back on the Ichthyo lure the mantas and the baddies away from basilo. After the drop agro go back and feed again. Always remember to get off the Ichthyosaur right beside the basilo so you can feed it and jump back on it and run to safety. Be cautious of your surroundings especially Tuso and don't forget to keep eye on oxygen all the time underwater

How to Tame a Basilosaurus (non-violent tame)

Step 1- Lure it to the surface where it can still swim.

Step 2-Start feeding it fish.

Step 3-Use soothing balm.

Step 4-Continue feeding it fish.

Good luck

When you get to like 50% tamed on this dude it the bar starts going down when you use raw fish meat I couldn’t tame this guy so... i killed it😔

If only it had a horn then it could be a narwhal

Tame while riding an ichthyosaurs!! You can outswim the mantas!!

To tame this creature you need an Ichyosaurus, because nothing will attack you if you are riding it. It takes a while for it to to start the second feeding. Also, make sure you’re using the same food or the taming process will restart. A must-have to get biotoxin, because they are torpor immune. Will receive damage if you go to far down, but rapidly gains health at the surface. If playing on mobile, go to unofficial server called (Official) Pearl’s Legacy. -KingJadon08

Loads of these live around herbivore island and so do titanosaurs which often drown so if you go to Herby island if your lucky you simply wait until the titanosaur drowns itself collect as much prime meat as possible and go take the basi!

Roughly 8 min between 1st and 2nd feeding of a 140 x-basilo