- What to know
- Quick overview of the Sample Collection quest
- Where to start the Sample Collection quest
- Understanding the quest objective
- How sample collection actually works
- The fast method to finish Sample Collection quickly
- Why the Luck Potion reward matters
- Best times to use the Luck Potion
- Beyond the Sample Collection quest
What to know
- Sample Collection is an early Crystal Depths Update Part 2 quest with no fishing required
- The quest takes place entirely on Kohana Island
- You need to collect 10 samples (flags) and return them to Scientist Jameson
- By rejoining the game, you can reuse the same sample location, making this one of the fastest potion quests
In Fish It, not every valuable item comes from grinding rare fish or surviving brutal RNG. Some of the most efficient progression boosts come from simple exploration quests—if you understand how the mechanics really work. The Sample Collection quest is a perfect example.
On the surface, this quest looks like a slow scavenger hunt spread across Kohana Island. In practice, it can be completed in minutes and rewards a Luck Potion, which is far more useful than the quest description suggests. This guide explains exactly how the quest works, how to finish it quickly, and why it’s worth doing even if you’re already deep into Crystal Depths content.
Quick overview of the Sample Collection quest
| Quest detail | Information |
|---|---|
| Quest name | Sample Collection |
| Update | Crystal Depths Update Part 2 |
| Starting location | Kohana Island |
| Quest giver | Scientist Jameson |
| Objective | Collect 10 samples (flags) |
| Reward | Luck Potion |
Where to start the Sample Collection quest
To begin the Sample Collection quest, travel to Kohana Island, a key location introduced in the Crystal Depths Update Part 2. On the island, you’ll find Scientist Jameson, an NPC focused on environmental research rather than fishing challenges.

Interacting with Scientist Jameson activates the quest immediately. There are no fishing prerequisites, no rod requirements, and no bait checks. This makes Sample Collection one of the most accessible quests in the entire update.
Understanding the quest objective
Scientist Jameson asks you to collect 10 samples, represented in-game as small flags placed around Kohana Island. These flags act as data collection points rather than physical items you store in your inventory.
Each time you interact with a flag, the quest counter increases by one. Once the counter reaches ten, the quest objective updates and allows you to return to Scientist Jameson for your reward.

At first glance, this appears to require visiting ten unique locations across the island. That assumption is what makes the quest feel longer than it actually is.
How sample collection actually works
The Sample Collection quest does not track unique sample locations. It only tracks successful sample interactions. This distinction is critical.
When you collect a flag, the game marks that interaction as complete for your current session. However, when you leave the game and rejoin the same server type, the flags reset. The quest counter does not reset, meaning the same flag can be collected again and still counts toward the total of ten.

This behavior allows you to complete the entire quest by repeatedly collecting one single flag.
The fast method to finish Sample Collection quickly
Step 1: Accept the quest from Scientist Jameson
Travel to Kohana Island and activate Sample Collection by speaking with the NPC.
Step 2: Locate the nearest sample flag
Find any flag close to Scientist Jameson. The exact location does not matter.

Step 3: Collect the sample
Interact with the flag until the quest counter updates.
Step 4: Leave the game and rejoin
Exit to the menu and rejoin Fish It. Return to Kohana Island.
Step 5: Collect the same flag again
The flag will have respawned. Interact with it to increase your sample count.
Step 6: Repeat until the counter reaches ten
Continue rejoining and collecting until the quest objective is complete.

Step 7: Return to Scientist Jameson
Once all ten samples are registered, speak with the NPC to receive your reward.
Using this method, the quest can be completed in a fraction of the time it would take to explore the entire island.
Why the Luck Potion reward matters
| Reward | Effect | Practical value |
|---|---|---|
| Luck Potion | Increases luck temporarily | High for farming and quests |
Although some players dismiss the reward as “not worth it,” the Luck Potion has clear value depending on when and how you use it. Luck directly influences rare fish spawns, mutation chances, and quest efficiency. When activated during high-value fishing sessions, even a small boost can significantly improve outcomes.

For players preparing for mutation-heavy quests or rare fish hunts, the potion is far from useless.
Best times to use the Luck Potion
The Luck Potion shines when stacked with other bonuses. Activating it during events, high-luck server windows, or while using advanced bait multiplies its effectiveness. It is particularly helpful before attempting quests that rely on RNG rather than guaranteed progression.
Saving the potion instead of using it immediately is often the smarter move, especially if you plan to tackle Crystal Depths content that demands rare encounters.
Beyond the Sample Collection quest
Sample Collection serves as an introduction to non-fishing quest mechanics in Fish It. Unlike traditional rod-and-bait tasks, it teaches players to interact with the world directly and understand how session-based resets work.
This knowledge becomes increasingly important in later quests, where exploration tools, environmental devices, and NPC-driven research mechanics are used alongside fishing objectives.
The Fish It update added a new Charms system, letting players equip Charms that improve fishing odds for certain fish and enhance gameplay depth. Currently, only a couple of Charms are available, but they represent a shift toward more strategic play by influencing catch chances.
The update also introduced several new redeemable codes giving items like Leviathan Scales, Luck II Potions, and exclusive rewards to help progression. Players can redeem codes by opening the in-game shop and entering them in the code box for free cash, potions, baits, and more.