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
I may be wrong but on Crystal Isles I think you can find them in the weird lighting/snow biome place and there are these balls of water near the ground and sometimes if you get too close they will reach out and grab you. :x
When attacking, use Basilosaurus whales, they cannot be grabbed, be aware that once low health, the squid will flee and emit ink, and debuff you by making all nearby creatures aggro you. I almost lost a 265 basilosaurus to 4 dunkleos and 10 megalos that boxes me into a star formation.