PoE 2 Shark Fin: Where It Drops, Who Takes It and Which Lesson to Pick

The Shark Fin drops from the Great White One of Whakapanu Island, an optional Act 4 boss. It lives in the island's Shark Pit. Sail there from Kingsmarch, the Act 4 town.

The Shark Pit is a sandy arena open to the water. Walk to the water's edge and the shark surfaces to attack. It swims through the sand between bites, so keep moving.

The boss is weak to Lightning, so a Lightning skill shortens the fight. Pick up the Shark Fin when it dies. The fin is the quest item of the Act 4 side quest Tribal Medicine. If you pick it up before you meet Kaimana, your quest log reads "Find a use for the Shark Fin".

The Shark Fin goes to Kaimana, the healer of the Tribal Medicine quest. Where she stands depends on how far your Act 4 story is.

1. Pick up the Shark Fin. It drops where the shark boss dies.
2. During Act 4, sail to Ngakanu. Kaimana is in the village there.
3. After Act 4, go to the Karui ship in Kingsmarch. Kaimana stands on board once the story ends.
4. Talk to Kaimana and hand over the fin. She offers 2 Lessons.
5. Pick Kaom's Lesson or Rakiata's Lesson. The pick is final for that character.
6. Right-click the Lesson in your inventory. That grants its blessing for good.

Kaimana offers 2 permanent Lessons, and you take 1. The values below are the in-game text since patch 0.5.0, and patch 0.5.5 keeps them.

Lesson	Exact effect	Best for
Kaom's Lesson	Grants 30% increased Global Armour, Evasion and Energy Shield.	Energy Shield builds and a build that is still open
Rakiata's Lesson	15% of Armour also applies to Elemental Damage. Gain Deflection Rating equal to 12% of Evasion Rating. 12% faster start of Energy Shield Recharge.	Armour, Evasion and Armour plus Evasion builds

The pick is final for that character. Each new character earns its own Lesson in its own Act 4.

Kaom's Lesson adds 30% increased Armour, Evasion and Energy Shield. Rakiata's Lesson adds 3 effects, 1 for each of those defences. Match the Lesson to the defence your build stacks.

• Armour builds: Rakiata's Lesson. 15% of your Armour also applies to Elemental Damage.
• Evasion builds: Rakiata's Lesson. You gain Deflection Rating equal to 12% of your Evasion Rating.
• Armour and Evasion hybrids: Rakiata's Lesson. 2 of its 3 effects work for your character.
• Energy Shield builds: Kaom's Lesson. 30% increased Energy Shield adds to the pool you play on.
• Build still open: Kaom's Lesson. Its 30% covers whichever defence you build later.

Pick the build before the Lesson. PoE 2 builds has the skill for each ascendancy, and the PoE 2 tier list grades all 22 ascendancies. PoE 2 classes lists the attributes of each class.

Kaimana moves as the Act 4 story moves, so she can be missing from Ngakanu when you arrive with the fin.

1. Keep the Shark Fin in your inventory. It waits there through the rest of Act 4.
2. Finish the Act 4 main story. Kaimana then leaves Ngakanu for Kingsmarch.
3. Go to the Karui ship in Kingsmarch. Kaimana stands on board and takes the fin.

Skipped the boss? Sail back to Whakapanu Island after Act 4, kill the shark boss and hand the fin in on the Karui ship.

Act 4 has 6 places with a permanent reward. Together they give 4 passive skill points, 5% maximum Mana and 5 picks, the Shark Fin Lesson among them.

Where and what to do	Permanent reward
Journey's End: Kill Omniphobia, Fear Manifest, in the Dark Mists quest.	+2 passive skill points
Eye of Hinekora: Pay your respects in the Silent Hall.	+5% maximum Mana
Whakapanu Island: Kill the shark boss and bring the Shark Fin to Kaimana.	Kaom's Lesson or Rakiata's Lesson. The pick is final.
Halls of the Dead: Complete 3 trials for 3 Tattoos.	Tawhoa's Test: +5 Dexterity or +5% Lightning Resistance. Tasalio's Test: +5 Intelligence or +5% Cold Resistance. Ngamahu's Test: +5 Strength or +5% Fire Resistance. Each pick is final.
Trial of the Ancestors: Kill Yama the White, then speak to Hinekora.	+2 passive skill points
Abandoned Prison: Find the Goddess of Justice.	30% increased Life Recovery from Flasks or 30% increased Mana Recovery from Flasks. Swap the pick any time.

The full campaign of 4 acts and 3 interludes is laid out on PoE 2 campaign.