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Stardew Valley Professor Snail Guide

Complete guide to Professor Snail's field survey, including fossil donations, island surveys, and rewards.

πŸ’• Social πŸ“… All Seasons 🟑 Intermediate πŸ“… Published: Jun 15, 2026
# Ginger Island # Professor Snail # fossils # field survey # Golden Walnuts

Professor Snail Guide

Professor Snail is a special NPC in the northern part of Ginger Island who manages the Island Field Office. Completing his field surveys rewards Golden Walnuts and eventually unlocks the Ostrich Incubator recipe.

How to Unlock Professor Snail

  1. Go to the Ginger Island North Dig Site.
  2. Spend 10 Golden Walnuts on the parrot next to the broken bridge to repair the bridge to the dig site.
  3. In the mushroom cave north of the dig site, use a bomb or slingshot to destroy the boulder.
  4. After rescuing Professor Snail, he will return to the Island Field Office (inside the tent).

Professor Snail cannot receive gifts or be married, but you can talk to him for hints on fossil locations.

Fossil Donation Tasks

At the Island Field Office, you can donate fossils to assemble four complete animal skeletons. Each completed fossil grants Golden Walnut rewards.

Large Animal Fossil (Bear)

PartQuantitySource
Leg Bone Fossil2Dig Site bone nodes (10% chance)
Rib Fossil1Dig Site bone nodes (1.35%) / Ginger Island South artifact spots (25%)
Skull Fossil1Opening Golden Coconuts (14%, won’t appear on first try)
Spine Fossil1Fishing in the small river next to the dig site (10%)
Tail Fossil1Panning in the small river next to the dig site (20%)

Completion Reward: 6 Golden Walnuts + 1 Banana Sapling

Snake Fossil

PartQuantitySource
Snake Skull1Ginger Island West artifact spots (10%) / Dig Site artifact spots (10%) / Ginger Island West fishing (10%)
Snake Vertebrae2Ginger Island West artifact spots (22.5%) / Ginger Island West mussel nodes (2.5%) / Ginger Island West stones (1%)

Completion Reward: 3 Golden Walnuts + 1 Mango Sapling

Frog Mummy

  • Requires: 1 Frog Mummy
  • Source: Randomly obtained when clearing weeds in the Ginger Island East jungle.
  • Completion Reward: 1 Golden Walnut

Bat Mummy

  • Requires: 1 Bat Mummy
  • Source: Mining stones in the Volcano Dungeon (0.5% chance)
  • Completion Reward: 1 Golden Walnut

Island Surveys

Professor Snail also conducts two island survey quizzes. You can only answer once per day.

Purple Flower Survey

  • Question: How many purple flowers are there on the island?
  • Answer: 22
  • Reward: 1 Golden Walnut

Purple Starfish Survey

  • Question: How many purple starfish are there on the island?
  • Answer: 18
  • Reward: 1 Golden Walnut

Completion Reward

After completing all fossil donations and island surveys, Professor Snail will reward you with:

  • Ostrich Incubator Recipe β€” Used to hatch Ostrich Eggs and raise ostriches that produce Ostrich Eggs.

Useful Tips

  • In the donation interface, you can select the β€œHint” button for clues on item locations.
  • Professor Snail’s dialogue contains hints (e.g., frogs are in dark, damp places; bats can withstand high temperatures).
  • Golden Coconuts can be obtained by fishing around Ginger Island or traded with coconuts at the Desert Oasis.
  • It is recommended to complete the Large Animal Fossil first (the most rewarding), then gradually complete the other fossils.
  • The Bat Mummy requires mining stones in the Volcano Dungeon, so it is recommended to collect it while exploring the volcano.