Just go to eldrich zone on crystal isles and look for big bubbles that have some black clams/oysters inside of them, put your angler fish inside the bubble, harvest, and enjoy the best black pearls harvester in the entire game, super easy, rank up for people to see this.

On mobile what i do is just tame a basilo and bring 3 pairs of scuba tanks and some flippers. Then go to the bottom and watch the basilo’s health then kill euryptarids and ammonites.

Tame a crystal wyver then go to crystal isles where all the squids spawn and start killing the "beached" ones. Ez black pearls

first tame an ichthy then go to rag about 75,23 more black pearls then you can carry on the sea floor and not to dangerous just keep an eye out for megs

When you want black pearls in great quantity, here are some things I suggest.
1: Ragnarok: Vikings bay. Bring a good crossbow to one shot any water scorpions, they drop TONS of black pearls.
2:Extiction: Gachas. Sometimes when taming gachas, you can get one that produces black pearls. They produce in big quantities, and for me is by far the safest and easiest way to get the black pearls. Like if this helps!😄

I'm on mobile and usually play on unofficial but the way I get tons of black pearls and bio tox is just get a high lvl basilos then go around the sea floor and just kill everything

I still have not found a way to gather pearls with a tuso but the GACHA is through its production lines

Ragnarok in Viking Bay around the sunken ship in the middle of the bay and also at 10 90. There’s a tiny tip of a Boulder to land a flyer out there. The water is shallower in that area. Another sunken ship there with lots of lobsters to kill.
Aberration down in the red hazard zone. They can be picked up off the ground down there.
Genesis in the volcano biome. Down in the Magmasaur pit they can be picked up off the ground there too.

Gachas get about 60 per good crystal if you’re lucky or they get 25-30

When low level tame otter and make it kill fish there is a chance it will get a black pearl

The one best way on island is to get black pearls by killing alpha mosa they spawn common behind carno or dead island or by erypterid sea scorpions they droop too

In ark mobile I accidentally pressed an advert that gives ya free stuff.After watching I got twenty black Pearl's.... I was surprised this is the only time I was impressed after watching an advert lol

Kill tusos sea scorpions nautilus and alpha mosa and tuso

Use an icthy to kill scorpions. They don't gain torpor

If You Have Tuso You Can Easly Kill Alpha Mosa Or Tuso

How I get in ark mobile?? , Can I have some other tips for it because I'm tired of otter

If u play at Ragnarok just get to the ship in vicking bay and farm a lot of black pearls

On crystal isles go to the elderich isles and youll c some giant watery orbs. U can actually go inside them and swim around. Youll c some black clam/oyster lookin things. If u pick those up like u would to berries from a bush youll get black pearls. Just be careful as eels and other annoying things can spawn in the orbs.

Use otters it’s fun and there cute.

Gachas do it just tame a few then separate them a ton