- What to know
- Taking Measurements quest
- Prerequisites you must complete first
- Location of the Taking Measurements quest
- How measurements actually works
- How to complete the Taking Measurements quest step by step
- Quest rewards explained
- Common issues and how to avoid them
- Is Taking Measurements worth doing
What to know
- Taking Measurements is part of the Crystal Depths Update Part 2 progression path
- You must complete Forgotten Tool and Sample Collection quests beforehand
- The quest involves using a measurement device rather than fishing
- Completing it rewards a Mutation 1 Potion, useful early but not game-changing
Once you reach the Crystal Depths Update Part 2 content in Fish It, you’ll start encountering quests that lean more toward exploration and interaction rather than pure fishing RNG. Taking Measurements is one of those quests. It’s not mechanically difficult, but it can be confusing if you miss a prerequisite or don’t understand how the measurement tool works.
This guide explains every step in detail, clarifies why the quest exists in the progression chain, and helps you complete it efficiently without unnecessary backtracking.
Taking Measurements quest
| Quest detail | Information |
|---|---|
| Quest name | Taking Measurements |
| Update | Crystal Depths Update Part 2 |
| Starting location | Crater Island |
| Quest type | Exploration and interaction |
| Required tool | Measurement Device |
| Main reward | Mutation 1 Potion |
Prerequisites you must complete first
Before the quest even becomes available, Fish It checks your progression state. If the NPC on Crater Island refuses to offer the quest, it almost always means one of the required quests is still incomplete.
| Required quest | Where it starts | Why it matters |
|---|---|---|
| Forgotten Tool | Kana Island | Unlocks scientist questline |
| Sample Collection | Scientist NPCs | Introduces research mechanics |
Forgotten Tool from Kana Island is the most commonly missed requirement. This quest introduces the scientific research theme that later quests, including Taking Measurements, build upon. Without completing it, the Crater Island scientist will not acknowledge you as eligible.
Sample Collection acts as a tutorial-style quest for interacting with non-fishing mechanics. Completing it ensures you understand how to handle tools rather than rods and bait.
Location of the Taking Measurements quest
To begin the quest, travel to Crater Island and locate the scientist NPC stationed there. This NPC is part of the Crystal Depths research storyline and focuses on environmental data rather than fishing objectives.
Once you interact with the NPC, you’ll receive dialogue explaining the need to collect environmental measurements around the island. At this point, the quest is added to your active log, and the measurement device becomes essential.
How measurements actually works
The measurement process is based on movement rather than time or interaction points. You do not need to click on specific objects or stand in marked zones. Instead, the game tracks your exploration across the island’s terrain.
Walking naturally around Crater Island is enough to fill the measurement progress bar. Vertical movement, such as climbing or descending slopes, also contributes, making full island exploration slightly faster than pacing back and forth in one area.
The device will notify you when measurement collection is complete. Until that confirmation appears, leaving the island or disabling the tool will halt progress.
How to complete the Taking Measurements quest step by step
Step 1: Travel to Crater Island and speak to the scientist
Make sure all prerequisite quests are completed. Interact with the NPC to activate Taking Measurements.
Step 2: Open your inventory and enable the measurement device
Select the device manually. Simply having it equipped is not enough; it must be actively enabled.
Step 3: Walk around Crater Island while measurements are active
Explore naturally. You do not need to sprint or jump excessively, but covering varied terrain speeds things up.
Step 4: Wait for the completion confirmation
Once enough data is gathered, the game will indicate that measurements are complete.
Step 5: Return to the scientist NPC
Speak to the NPC again to submit the data and finalize the quest.
Quest rewards explained
| Reward | Description | Long-term value |
|---|---|---|
| Mutation 1 Potion | Applies a basic mutation effect | Low to moderate |
The Mutation 1 Potion is the only reward from this quest. While it is not considered a high-value item in late-game Fish It, it still serves a purpose.
Early and mid-game players can use it to experiment with mutation mechanics or slightly improve fish value. For advanced players already farming higher-tier mutations, the potion is more of a collection or progression token than a power spike.
Common issues and how to avoid them
The most frequent problem players encounter is forgetting to enable the measurement device. Walking around Crater Island without activation does nothing, even though the quest appears active.
Another issue is leaving the island mid-measurement. Fast traveling away cancels progress, forcing you to restart the data collection.
Some players also assume the quest is bugged because progress feels slow. In reality, remaining in one small area dramatically reduces progress speed. Full island exploration resolves this almost immediately.
Is Taking Measurements worth doing
While the Mutation 1 Potion itself may feel underwhelming, Taking Measurements is a required link in the Crystal Depths quest chain. Completing it ensures uninterrupted access to later research-focused content and NPC interactions.
Viewed as a progression checkpoint rather than a loot quest, Taking Measurements does exactly what it’s designed to do: introduce new mechanics, reinforce exploration, and move your Fish It journey forward without unnecessary difficulty.
