The Dorsal Fin is an Item introduced in the Shipwrecked DLC. It is dropped by killed Bottlenose Ballphins and can be used to craft Ballphin Palaces. Unlike Shark Fins, Dorsal Fins are not edible to the player, but can be eaten by other mobs and used to tame Wildbores and other Ballphins. They can also be used as a filler in the Crock Pot, falling under the same category as Twigs.
- Dorsal Fins were added to the Shipwrecked DLC more than a year after its official completion in the Home Sea Home update, after being tested in a beta branch for several months.
- Despite being edible and technically a Meat item, Bunnymen will not attack the player for carrying Dorsal Fins.