Galapagos bullhead shark (Heterodontus quoyi)

A poorly known but highly distinctive species, the Galapagos bullhead shark has an enlarged, blunt nosed-head, ending in a pig-like snout, and striking spotted patterning covering its upperparts (2) (3). The overall colouration of the species is light grey or brown above and marked with numerous large black spots, while the underside is pale (2). The pectoral fins are relatively large compared to the body, allowing the Galapagos bullhead shark to clamber along the sea-bed, while the two smaller dorsal fins each bear a sharp spine to deter predators (2) (4). The teeth of this species, like other bullhead sharks, are unusual, with pointed, biting teeth at the front of the jaws, and flattened crushing teeth at the rear (2) (5)