Great hammerhead shark - Sphyrna mokarran — Shark Research Institute

Great Hammerhead, Sphyrna mokarran (Rüppell, 1837) - The Australian Museum

Hammer Time, Blog

Scalloped Hammerhead, Sphyrna lewini (Griffin & Smith, 1834) - The Australian Museum

The Mokarran Protection Society - Shearwater Research

The Great Hammerhead Shark

Great hammerhead sphyrna mokarran hi-res stock photography and images - Alamy

Researchers Sequence Genomes of Two Endangered Shark Species

Sphyrna zygaena – Discover Fishes

Great Hammerhead Shark Information

Great Hammerhead Shark - Georgia Aquarium

Scalloped hammerhead shark - Sphyrna lewini — Shark Research Institute

Endangered Great Hammerhead Shark

Published scientific estimates of hammerhead shark population declines