Japanese Bullhead Shark, Heterodontus japonicus (Maclay & Macleay, 1884) - The Australian Museum
Galapagos Bullhead Shark - Heterodontus quoyi
Maximilian Hirschfeld - Population Connectivity of Galapagos Bullhead Sharks and the Identification of Key Habitats for Conservation in the Galápagos Archipelago - The Rufford Foundation
The Galapagos Bullhead Shark Project – Galapagos Science Center