How to Beat the Spider Crab Boss in How to Fish (3-Step Quick Guide)
To defeat the Giant Spider Crab on Lighthouse Island, buy a $12 beer can from the shop, talk to Old Pete to empty it, and cast the Empty Beer Can into the abyss under the broken pier. Lure the crab onto dry sand, sprint behind its legs to avoid claw slams, and slice its underbelly joints with an Anvil-Sharpened Knife (Tier 2). NEVER SELL THE ANCIENT CHITIN SHELL — give it to Captain Barnaby for free ferry travel to Forest Island!
Buy $12 beer & talk to Old Pete. Cast under the broken pier to hook the crab.
Kite onto dry sand. Circle behind claw slams and slice leg joints with Tier 2 Sharpened Knife.
Give the Ancient Chitin Shell to Captain Barnaby for FREE ferry travel. Ignore the $500 key scammer!
Giant Spider Crab
The introductory boss of How to Fish. Teaches the fundamental combat loop: summon via specific junk bait, kite onto land, target weak points, and preserve the boss trophy for progression.

Critical Mistakes to Avoid & Quest Warnings
- ⚠️CRITICAL: DO NOT SELL THE SPIDER CRAB SHELL! The ferry captain requires this shell to repair the vessel and unlock travel to Forest Island.
- ⚠️Do NOT spend $500 on the 'Boat Key' from the harbor scammer! Handing over the Spider Crab Shell to Captain Barnaby repairs the ship for 100% FREE.
- ⚠️Do not fight in the water; always lure the crab onto the dry sandy beach to prevent drowning or movement penalties.
- ⚠️Don't attack with an unsharpened knife (Tier 1) as hits will bounce off with 90% damage reduction.
How to Summon Giant Spider Crab
Buy a full beer can for $12 from the Lighthouse shop, talk to the Lighthouse Keeper (Old Pete) to drink it empty, and cast the Empty Beer Can into the deep abyss beneath the broken wooden pier. Note: If lost, an empty can also respawns daily at 06:00 behind the lighthouse trash bins.
Combat Phases & Tactics Breakdown
Tidal Breach (100% - 60% HP)
The Spider Crab emerges from the pier pilings, scuttling across the sand and attempting heavy claw pinches.
- Double Claw Slam (High frontal damage, 1s windup)
- Sand Spray (Blinds screen for 1.5s)
Bubble Barrage & Enrage (60% - 0% HP)
Enters an enraged red state, spitting pressurized bubble clusters that track player movement.
- Pressurized Bubble Mortars (AOE splash damage)
- Rapid Charge (Dashes straight at player, destructive hitbox)
Boss Drops & Trophy Use Cases
Hand over to Captain Barnaby at the dock to unlock the Forest Island ferry passage for free.
DO NOT SELL TO THE STORE!
Can be sold or cooked at the campfire for substantial early-game money.
Carry at least 120+ SMG rounds or 25+ Shotgun shells before casting the summon lure.
Eat a Prehistoric Pike Steak (+20% Stamina Regen for 5m) to prevent line breaks during extended boss breaches.
Back up your local save directory before initiating high-tier boss encounters in multiplayer lobbies.
Frequently Asked Questions (Giant Spider Crab)
Q:Where is the Giant Spider Crab located in How to Fish?
The Giant Spider Crab is the Apex Boss of Island 1 (Starter Island / Lighthouse). Its summoning abyss is located directly beneath the broken wooden fishing pier behind the lighthouse.
Q:How do you summon the Spider Crab in How to Fish?
Buy a full beer can for $12 from the Lighthouse shop, speak with Lighthouse Keeper Old Pete to drink it empty, and cast the Empty Beer Can into the deep abyss beneath the broken wooden pier. An empty beer can also spawns daily at 06:00 behind the lighthouse trash bins.
Q:How do you beat the Spider Crab in How to Fish?
1. Immediately lure it out of the water onto the dry sandy beach to avoid drowning penalties. 2. Sprint in circles around its legs to dodge the Double Claw Slam and Sand Spray. 3. Slash its soft leg joints and underbelly with a Tier 2 Anvil-Sharpened Knife. 4. In Phase 2, pop tracking bubble mortars behind boulders and shoot its glowing eyes with your pistol.
Q:What do you do with the Ancient Chitin Shell drop?
CRITICAL WARNING: DO NOT SELL the Ancient Chitin Shell! Handing this shell over to Captain Barnaby at the harbor repairs his ferry vessel for 100% FREE, unlocking passage to Forest Island. Do not pay the $500 scammer for a Boat Key.
Q:Can you damage the Spider Crab with a basic starter knife?
No! An unsharpened Tier 1 starter knife bounces off the crab's armored carapace with 90% damage reduction. Always sharpen your blade to Tier 2 on the Lighthouse anvil before summoning.
Related Habitat, Progression & Arsenal Guides
Weapons & Rods
Weapon DPS ratings & Pull Back Rod
Difficulty Settings
Easy mode -30% boss HP reduction
5-Island Progression
Deliver Giant Spider Crab trophy to advance
Fish & Bait Database
All local catches on Starter Island (Lighthouse)