How to Find Tidevex in Catch a Monster (March 2026) Ultimate Guide

Updated by Sunny Kaushik
January 31, 2026
Gaming

If you’ve been playing Catch a Monster for a while, you know that the early game is a breeze, but the mid-to-late game bosses start to get serious. One boss that has been causing players a lot of headaches (and wasted time searching) is Tidevex. I remember spending hours wandering around the wrong zones, hoping for a random spawn, only to realize I was missing a key step.

In this comprehensive guide, I’m going to walk you through exactly where to find Tidevex in Catch a Monster, how to trigger the spawn, and the best strategies to take him down without wiping your team. Whether you are looking to farm him for loot or just want to cross him off your list, I’ve got you covered.

Quick Overview: Tidevex Boss Facts

Before we dive into the nitty-gritty details of the location and fight mechanics, here is a quick summary table to get you up to speed.

Feature	Details
Boss Name	Tidevex
Location	Sunken Grotto (Secret Area)
Recommended Level	Level 45+
Element Type	Water / Hydro
Main Weakness	Electric / Nature
Spawn Trigger	Interact with “Ancient Conch”
Best Time	Night (In-game)
Top Rewards	Aqua Pearl, Tidevex Egg, 5000 Gold

Step 1: Preparing for the Hunt

Before you even set out to find Tidevex, you need to make sure your party is ready. Trust me, walking into this fight under-leveled is a recipe for frustration. Based on my experience and the data gathered from top guides, including the detailed breakdown over at Noleep, preparation is half the battle.

Level Requirements & Gear

You should ideally be around Level 45 before attempting this fight. If you are below level 40, Tidevex’s area-of-effect (AoE) attacks will likely one-shot your lower-level monsters.

Recommended Gear:

Armor: Focus on gear that offers Water Resistance. You can craft this using materials from the earlier “Riverbank” zone.
Consumables: Stock up on “Thunder Elixirs.” These boost your electric-type damage, which is Tidevex’s primary weakness. Don’t go in with fewer than 10 potions.

Team Composition

You can’t just bring your favorites; you need a balanced team. Here is the loadout I used to beat him on my first try:

Tank: A high-defense Rock or Earth type (e.g., “Golemheart”) to absorb Tidevex’s heavy hits.
DPS (Main): An Electric type (e.g., “Sparky” or “Voltrix”). This is your primary damage dealer.
DPS (Secondary): A Nature type. While not as effective as Electric, Nature moves still deal decent damage against Water types.
Support: A monster with healing capabilities. “Healpix” is great here for keeping your tank alive.
Debuffer: Someone who can lower Tidevex’s defense or accuracy.

Step 2: Exact Location of Tidevex

Finding Tidevex isn’t as simple as following a marker on the map. He resides in a sub-zone called the Sunken Grotto.

Getting to the Sunken Grotto

To reach Tidevex, follow these steps precisely:

Start at the Port Town: Head to the main coastal hub. This is where you unlock the boat mechanics.
Travel to the Misty Isles: Take your boat east until you reach the coordinates X: 450, Y: 120. You will see a cluster of islands covered in fog.
Enter the Coral Cave: On the largest island in the center, look for a cave entrance obscured by seaweed. This is the Coral Cave.
Dive Deep: Once inside the Coral Cave, navigate to the very back of the dungeon. You will see a glowing blue portal. Do not enter this yet.

Note: While researching the fastest route, I found that some players get stuck at the Coral Cave because they haven’t completed the “Captain’s Log” quest. Make sure you’ve talked to the NPC on the dock first.

The Secret Spawn Point

The portal in the Coral Cave takes you to the Sunken Grotto. This is an underwater zone where movement is slightly slower.

The “Ancient Conch” Mechanic:
Tidevex does not spawn automatically. You must find the Ancient Conch inside the Grotto.

From the portal spawn, swim North.
You will find an altar with a large shell on it.
Interact with the shell.
Wait approximately 30 seconds.

After 30 seconds, the water will turn dark, the music will change to a suspenseful track, and Tidevex will emerge from the sand in the center of the arena.

Pro Tip: If you interact with the Conch and nothing happens, check your in-game time. Tidevex only spawns at Night (in-game time). If it’s day, either use a “Moon Stone” item to skip time or wait a few minutes.

Step 3: Boss Fight Strategy & Mechanics

Now that you’ve found him, you have to beat him. Tidevex is a Level 50 World Boss (scaled to your level if higher), and he hits like a truck.

Phase 1: The Hydropump Assault (100% – 70% HP)

In this phase, Tidevex relies mostly on single-target water attacks.

Move to watch out for: Tidal Slam. He raises a fin and smashes the ground. It deals physical damage to your active monster.
Strategy: Keep your Tank out. Let your Support heal the tank after every slam. Do not swap in your Electric DPS yet; save them for later. Use your Rock-type to chip away at his health bar slowly.

Phase 2: The Bubble Trap (70% – 40% HP)

Once his health drops below 70%, the arena changes.

Environment: Bubbles start rising from the floor.
Move to watch out for: Bubble Prison. Tidevex will trap one of your monsters in a giant bubble for 2 turns. You cannot control that monster while trapped.
Strategy: This is where you bring in your Electric DPS. Burn his health down as fast as possible. If your main DPS gets trapped, immediately swap to your secondary DPS. Do not waste turns trying to break the bubble; it’s invulnerable until the timer expires.

Phase 3: Enrage (40% – 0% HP)

This is the most dangerous part of the fight.

Move to watch out for: Maelstrom. Tidevex starts channeling a massive whirlpool that hits your entire team every turn for moderate damage.
Strategy: You need to race him here.
1. Pop your “Thunder Elixir” now.
2. Use your most powerful Ultimate moves.
3. Keep your healer on “Auto-Heal” to keep the team above 50% health.
4. If your Tank dies, revive them immediately; do not try to tank with your squishy DPS.

Common Mistake to Avoid:
I see many players trying to “capture” Tidevex while his health is in the red during Phase 3. Don’t do it. The catch rate is abysmally low because he is Enraged. Wait until he is down to about 5% HP and hope he isn’t channeling Maelstrom. Ideally, capture him right at the end of Phase 2.

Advanced Tips & Loot Farming

If you are looking to farm Tidevex for specific drops, like the Tidevex Egg to add him to your collection, here is how to optimize your run.

Farming Route Efficiency

Create a “Save Point” at the Conch: Most games allow you to teleport. If you can set a recall point right at the Sunken Grotto entrance, do it.
Cooldown Management: Tidevex has a respawn timer of roughly 15 minutes in real-time. You don’t need to leave the server. Just sit by the Conch, wait for the “Night” cycle, and click again.

Best Loot Strategy

The drop rates for the rare “Aqua Pearl” (used for high-tier crafting) are only about 5%. To increase your luck:

Luck Stat: Ensure your lead monster has a high “Luck” stat or equips a “Clover Amulet.”
Capture vs. Kill: In Catch a Monster, you actually get more material drops if you Kill the boss rather than Catching it. If you want the Pearl, kill him. If you want the monster, catch him. It’s hard to get both in a single run.

Solo vs. Group

While you can solo Tidevex, bringing a friend makes Phase 3 significantly easier.

Group Role: If you are with a friend, have one person focus entirely on healing/buffs (Support) and the other focus purely on damage (DPS). This synchronized approach trivializes the Maelstrom mechanic.

Troubleshooting: Why Can’t I Find Tidevex?

If you followed the steps above and still can’t get him to spawn, check these common issues. I’ve checked community forums like Reddit and the official Discord, and these are the top 3 reasons players fail.

1. Server Issues

Sometimes, the in-game clock (Day/Night cycle) desyncs from the server visuals.

Fix: Log out of the server and log back into a fresh one. This resets the time cycle.

2. Quest Progression

You cannot fight Tidevex until you have completed the “Siren’s Song” quest line.

Check: Open your journal. If “Siren’s Song” is active or incomplete, finish it first. This quest chain unlocks the ability to interact with the Ancient Conch.

3. Invisible Wall Bug

There is a known bug in the Coral Cave where an invisible wall blocks the path to the portal.

Fix: Try jumping against the wall or using a movement ability (like a dash) to glitch through it. If that fails, re-enter the cave.

Frequently Asked Questions

What level should I be to fight Tidevex?

While you can technically find Tidevex at level 30, you will likely die. The recommended level to start the fight is Level 45. For a smooth, no-death run, aim for Level 50+.

Is Tidevex hard to catch?

Yes, Tidevex has a “Rare” capture rate. Even when his health is in the red, he breaks out of Ultra Balls frequently. Make sure to use “Golden Nets” if you have them, as they provide a 2x catch rate bonus for Water-types.

Can you find Tidevex during the day?

No. The spawn trigger at the Ancient Conch only works at night. If you interact with the shell during the day, you will get a message saying, “The shell is silent.” Use a Moon Stone item to force the time change to night instantly.

What are Tidevex’s weaknesses?

Tidevex is a Water-type boss. This makes him weak to Electric and Nature moves. Avoid using Fire or Ice monsters, as their damage will be significantly reduced.

How often does Tidevex respawn?

After being defeated, Tidevex enters a 15-minute cooldown (real-world time). You do not need to leave the server, but you do need to wait for the in-game night to return before clicking the Conch again.

Conclusion

Finding and defeating Tidevex in Catch a Monster is one of the more rewarding challenges the game offers right now. It tests your knowledge of elemental types, your preparation skills, and your ability to manage complex boss mechanics. Once you have this aquatic beast in your collection, you’ll find him invaluable for tackling the even tougher raids coming in the next update.

Don’t forget to bookmark this guide for later, especially if you need to reference the Phase 3 mechanics or the spawn location again. Good luck, trainer—I’ll see you in the Sunken Grotto.