On The Island, I always find very quickly in the waters near South Beach, around 65 longitude. They're generally not difficult to spot, due to the swarms of Mantas and Ichthyosaurs. Though it's only happened to me once, I've found one stuck between a large rock and the beach itself, at the south edge of the rocky penninsula near 50 longitude.
Regens health fast near the surface.
Gradually loses health when deep.
Passive oil generator.
Immune to electrophorus and Cnidaria stun and dismount effects.
Cannot be grabbed by tusoteuthis.
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.
So I play ark mobile I am a starter but I used so ticket Soo.. normal day a basilosaurus literally spawn at the herb island WHICH is my base too so I thought let's kill him it would be a low lvl but literally it was a frickin lvl 435 I have a 15 balm I buyed kibble and tamed it.its littery my one of the favorite now