If you have spent a really long time looking for one then it could possibly be because there are to many wild dinos in your world which means you need to go on a huge killing spree to open up some spots for the Tuso or any other Dino you can’t find to be able to spawn up so people will know
This noodle monster destroyed my lvl 46 itchy in under 5 seconds and didn’t even let me get its stuff back. After trying to kill it in my rage it decides to run when it’s health gets low. Now I kill any tuso I find for revenge.
When Ark says that the unicorn is the rarest creature. That’s a lie. At least the unicorn spawns. This thing is supposed to. I have spent the last week living in a pearl cave in their spawn hotspot and have not seen evidence of a single one. Reply to me @Tofuna
In my experience, I mostly encounter them deep sea in around Lat 95, Long 30 in The Island(ark mobile).
To tame one , just lure it to some wild plessy/mosa/carbonermys(turtle) and let it grab one of them. Then just swim at side(safe) or direct in mouth(kinda unsafe). Feed it 50 black pearls and bam! U have Giant squid.
Just use balm lol they are easy to get from caves, dont be lazy.