One of the easiest tames I’ve ever done…

All you need to do is use a swimming tame one that has a somewhat decent amount of health. (1.5K+)

Swim up to a squid and let it grab you.

Once you are grabbed, dismount your tame and with 50 black pearls in your last slot, swim up to the squids beak and feed it. BOOM. Tamed.

50 black pearls no matter the level.

Hope this helped! <3