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The First Boss in How to Fish: Giant Spider Crab

Last verified August 28, 2026 · Game version 1.0.10

The short answer:

The first boss is the Giant Spider Crab — a giant crustacean that surfaces at the starter island’s lighthouse reef once you throw an Empty Beer Can into its bubbling tidepool. It has 800 HP, guards Boat Key Part #1, and is deliberately gentle: it is the only boss that freezes after its charge, leaving a long damage window.

Full loadout details, phase breakdown, and the reward table live in the complete Spider Crab guide. This page is the quick version for “what is this boss and how do I start it.”

Summoning the First Boss (4 Steps)

  1. Buy a beer from the tavern NPC on the starter island.
  2. Give the beer to the beach drunk — he hands over the Empty Beer Can, the community’s “Rage Bait.”
  3. Cast the can into the bubbling tidepool near the lighthouse. Nothing happens if you fish the spot normally — the can is what angers the crab.
  4. Wait out the short cinematic — the Giant Spider Crab climbs up and the fight begins.

The Fight in One Paragraph

Sidestep its charge — it crashes into the rocks and stuns itself for about six seconds, and that freeze window is your entire game plan. Unload on the glowing joint plates with your knife or brass knuckles while it is down, repeat for a few cycles, and it folds. If you flip it, the soft belly is the damage spot. Bring a sharpened knife, keep the crab rod and hot dogs in reserve for the summons chain afterwards, and do not overthink positioning: this fight is designed to teach the dodge-and-punish loop the later bosses demand, without punishing you for learning it.

Rewards

Boat Key Part #1 · 200 gold · Spider Crab Shell Shield (10% drop chance). The key part starts your escape route — the other four bosses guard the remaining parts and coordinates, covered in the all-bosses hub.

Before You Summon It

  • Craft or buy a sharpened knife — bare hands make the freeze windows feel far too short.
  • Eat or carry food — the charge clip is the only real damage threat, but it hurts far more than anything else you have met on the starter island.
  • In co-op, bosses scale with the lobby — the co-op guide covers crew roles; a solo-style freeze loop still works, just with less room for errors.
  • Lost gear during the fight? The items triage page is the recovery path — and since Patch 1.0.10, dropped ground items persist in saves.

First Boss FAQ

What is the first boss in How to Fish?

The Giant Spider Crab, fought at the starter island's lighthouse reef. It is the first of the game's five colossal bosses and, by broad agreement among guides and players, the easiest — later bosses do not share its self-stun behavior.

How do I summon the first boss?

Buy beer from the tavern NPC, give it to the beach drunk to receive the Empty Beer Can (the "Rage Bait"), then cast the can into the bubbling tidepool near the lighthouse. The Spider Crab emerges after a short cinematic — no other prep is required to trigger it.

What do you get for beating the first boss?

Boat Key Part #1 — the first piece of the three-part boat key you need to escape the archipelago — plus gold and a chance at the Spider Crab Shell Shield. It also completes the Lighthouse Keeper's opening quest line that starts the boss chain.

Is the first boss hard?

No — it is the tutorial-grade fight. It has 800 HP, and its charge attack crashes it into rocks and stuns it for about six seconds, giving you free damage windows. Later bosses are faster, do not freeze after attacks, and need real gear upgrades before you attempt them.

Sources & Verification

Data on this page is re-verified against the sources above after each official patch. See our editorial policy for how we source and correct game data.