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 the new map, Lost Island- there is a sunken ship in the very bottom left corner. I mean, tucked almost right in the corner, where the barriers meet. If you go inside the sunken ship, to the bottom of it, you will find clams full of only black pearls. The devs have a sense of humor, I'll give them that!

On Fjordur, the only way to obtain Black Pearls without going underwater is through, one, the Magmasaur den at the volcano in a cave inside the Fire Wyvern den, or two, from taming Gachas found in Asgard. Hope this helps anyone playing on the new map.

I just found that when I command otters to attack fish in rivers, the highest rate of harvesting black pearls is from salmon, followed by piranha and coleacant.I had a team of 3 otters that slaughtered a total of ~30 fish and harvested 27 black pearls. Big profit...

"This is for only mobile players. Just tame a otter and turn on his/her victim item collection from the corner side of your device and give his/her agreesion to attack target and whistle it to follow you. Then go to small fishes and punch them and wait for some time. Keep warned that your otter's have to kill and hervest that not you. If the otter kill and hervst the fish then it will give you black Pearl. But it has only 35.78% chance to give you black Pearl.This is the tip to get black Pearl safely without any damage. Jay hind

Just become Jack Sparrow and summon Calypso

On the island map, this is such a pain to collect. Takes ages

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!😄

Pain in the ass to find on mobile

I just threw a my otter in water thinking I could get some fish meat but when I came to it, it gave me 30 pearls! I kept doing this until I got 230 pearls ands that’s how I got a tuso

Abberation,

Along the forbidden koolaid (down by drakes)at bottom. Can harvest 6k + in one lap around. Make sure you have a dino with a lot of weight to get out or at least the dino retrieval pad. Suggest s-dire bear if you are using the dino retriever.

Carnivorous plants in Gen2 give black Pearls, harvest them with best chainsaw you got

The Island- There are 4 steps.

1- Kill EVERY Trilobite you see and use an axe to harvest them.

2- Tame and train a dinosaur to ride underwater (I suggest Baryonix. It’s fast on land and in water and can breathe air and water and fight like crazy)

3- Ride your Dino to the bottom of the Ocean.

4- Ride around the edge of the map and kill every Trilobite, Sea Scorpion, Ammonote and Squid you see.

I got 100+ black pearls going along all 4 edges.

On mobile single player, frankly, nothing works better than this: save before accepting your gift, then restore over and over until you are gifted 20 black pearls. Clearly lazy, but faster than the alternatives.

When it comes to a black pearl, a gacha is your best freind

Alpha mosasaur drop alot of black pearl

Instead of going into deep water for sea scorpions

Use an otter and command it to kill and eat fish (note- it won't get any pearl if you attack it)

Once they eat it they will do a little animation and you got your pearl!

I would recommend trying on coelacanths cause salmons are too dangerous

ASA Astraeos

(Starter/Easy) Go to the center of volcano on Therokis, and follow the path of the lava. You’ll find black pearls you can grab on foot alongside the lava river and inside the volcano.

(Endgame/Hard) Go into the water near the Clams under Phokintos. You’ll want to use a water tame like an angler.

A Alpha mosasaur around level 18 in ark mobile dropped 100 black pearls so now I can tame the tuso 😁