
The Ancient Shark is a Legendary fish in Roblox Abyss, the hardest catch in the Ancient Sands biome and one of the most valuable. It sells for over $5,000, needed for key quests from Lost Captain and Grumpy Hank, and carries rare mutations that can multiply that payout by up to 8.5x. Here’s everything you need to catch it fast.
| Key Info | Details |
|---|---|
| Rarity | Legendary |
| Location | Ancient Sands (west side) |
| Sell Price | $5,091+ base |
| HP | 2,000–3,000 |
| Oxygen Drain per Hit | ~70–80 O2 |
| Best Gear | Oxy Tube + Magroot Gun |
The Ancient Shark only spawns in the Ancient Sands, the second major biome in Abyss. It does not appear in the starting Forgotten Deep area or surface ocean zones.
How to get there fast:
The shark spawns randomly on the western edge of Ancient Sands, near Grumpy Hank’s house. There’s no fixed spawn point; you’ll need to patrol and circle the biome. It’s large with a horn on its face, so it’s easy to spot once it appears. Be patient; it can take multiple passes before it shows up.

Getting your loadout right is the biggest factor in catching it quickly. Underpower yourself and a 3,000 HP fight will drain your oxygen and kill you.
Use the Oxy Tube or Plane Tube; both offer high oxygen capacity and a weight limit of 150 kg+, which is the minimum you need to carry the shark back. The Rukiri Tube (40,000 in-game cash) is even better if you’ve unlocked Spirit Roots.
Higher damage = shorter fight = less oxygen loss. Morveth’s Treasure Gun also clears the encounter faster if you have it.
Bring Oxygen Pods — the shark’s lunge attack drains ~70–80 O2 per hit. A damage potion is highly recommended to shorten the fight if your gun is borderline for the encounter.

The Ancient Shark is hostile and aggressive — unlike passive fish, it will attack you throughout the encounter. It’s the fastest fish in the game and moves extremely quickly across the catch bar when hooked.
Combat strategy:
The Ancient Shark can spawn with two mutations:
An Abyssal mutation can multiply the base $5,091 sell price by 8.5x, making a single catch worth 40,000+. Always check for mutations before selling.
It spawns randomly in the western part of Ancient Sands, near Grumpy Hank’s house. Teleport to Crazy Jeff and swim west to reach the area quickly.
A Tube with 150 kg+ capacity (Oxy Tube or better) and a high-damage gun like the Magroot Gun. Bring Oxygen Pods and a damage potion.
The base price is around $5,091. With an Abyssal mutation, this can multiply up to 8.5x, making it one of the most valuable catches in the game.
Yes. You need it for quests from both Lost Captain and Grumpy Hank in Abyss.
If you get a prompt blocking your catch, either your gun is too weak or your tube’s weight limit is too low. Upgrade both before trying again.