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Poptropica Wiki

Castaway Island during the time Professor Hammerhead lived there.

Castaway Island is an island that is located off the coast of Booga Bay on Shark Tooth Island. You can only reach the island after you've put the Great Booga Shark to sleep. You will find Professor Hammerhead and a boy stranded there. After leading them back to the mainland, you will receive the island medallion from the boy's mom.


The island appears as a large pile of sand with a few palm trees, a small makeshift hut with a clothing line, a few broken crates and a bamboo fishing pole lodged between two rocks. The word 'HELP' is also spelled out on the shore in sticks.


  • Despite the fact that the bottom of the word "HELP" is underwater, the branches creating the word still remain intact with none being washed away from the current.
Items Calming Potion | Carbonated Coconut Milk | Grass Skirt | Key Ingredient | Island Medallion | Old Bone | Shark Fin | Translation Key
Locations Ancient Ruins | Booga Bay | Castaway Island | The Medicine Man | Main Street (Coconut Cafe | Shark Museum) | Temple Dungeon | Temple Entrance | Temple Treasure Room
Characters Booga Bay Fisherman | Coconut Milk Vendor | Distressed Mother | Female Explorer | Fruit Bat Man | Giant Caterpillar | Grass Skirt Vendor | Great Beast | Great Booga Shark | Male Explorer | Professor Hammerhead | Medicine Man | Native Islanders | Professor Pendulum | Randomized NPCs | Shark Boy | Shark Fin Vendor | Shipwrecked Boy | Tourist Info Lady | Tourist Lady