Hammerhead Shark
⚡ Key Facts & Quick Answers (AEO Summary)
- Taxonomic Class: Fish & Marine Life
- Dietary Niche: Carnivore
- Max Speed: 40 km/h (25 mph) swimming
- Adult Weight: 230 - 450 kg (500 - 1000 lbs)
- Typical Lifespan: 20 - 30 years
- Primary Habitat: Warm temperate and tropical coastal waters, reefs
- Native Region: Tropical oceans worldwide
- IUCN Red List: Critically Endangered
📊 Physical & Biological Metrics
🧬 Scientific Taxonomy & Biological Classification
| Kingdom | Animalia |
|---|---|
| Phylum | Chordata |
| Class | Chondrichthyes |
| Order | Carcharhiniformes |
| Family | Sphyrnidae |
| Genus | Sphyrna |
| Species Binomial | Sphyrna mokarran |
📖 1. Species Overview
The Great Hammerhead Shark is the largest of all hammerhead species, reaching lengths of up to 6 meters (20 feet). Easily recognized by its hammer-shaped head (cephalofoil), this highly evolved marine predator possesses an expanded sensory field, specialized in hunting stingrays.
🦿 2. Physical Appearance, Anatomy & Adaptations
Hammerheads have a distinctive hammer-shaped head (cephalofoil) with eyes positioned at the outer ends. Their bodies are streamlined, gray-brown on the back and white on the belly. They have an exceptionally tall, curved first dorsal fin. They grow up to 4.5 to 6 meters in length.
🗺️ 3. Habitat, Geographic Distribution & Territorial Range
They inhabit warm tropical coastal waters and continental shelves worldwide. They are solitary travelers but migrate seasonally in large schools of hundreds of sharks. They use their cephalofoil to pin down stingrays against the seafloor, utilizing it like a tool.
🥩 4. Diet, Feeding Strategy & Hunting Tactics
They are carnivores that feed on stingrays, groupers, squids, crabs, and other sharks. Their cephalofoil is packed with Ampullae of Lorenzini (electro-receptors) that detect electrical signals of stingrays buried in the sand. They are immune to the toxic stingers of rays.
🐣 5. Reproduction, Lifecycle & Social Hierarchy
They are viviparous, giving birth to live young nourished by a placental connection. Gestation lasts 11 to 12 months, and the female gives birth to a litter of 20 to 50 pups. Pups are born with soft, flexible hammerheads to facilitate birth, swimming away immediately.
🛡️ 6. Conservation Status, Population Threats & Protection
Classified as Critically Endangered on the IUCN Red List. They have suffered catastrophic declines due to overfishing and targeted hunting for their large fins (used in shark fin soup). They are also highly vulnerable to dying from stress when caught in nets (bycatch).
💡 Fascinating Facts & Trivia
- The hammer-shaped head (cephalofoil) acts like a metal detector, packed with sensory organs that locate stingrays buried under the sand.
- Their eyes are placed at the ends of the hammer, giving them a full 360-degree vertical view of the ocean.
- Unlike many sharks, hammerheads have a small mouth relative to their body, situated on the underside of their head.
❓ Frequently Asked Questions (FAQ)
Direct authoritative answers regarding the biology, feeding habits, and habitat of the Hammerhead Shark.
The Hammerhead Shark is scientifically classified as Sphyrna mokarran. It belongs to the genus Sphyrna within the family Sphyrnidae, class Chondrichthyes, and phylum Chordata.
In the wild, Hammerhead Sharks inhabit Warm temperate and tropical coastal waters, reefs. Their native geographic range primarily spans Tropical oceans worldwide.
The Hammerhead Shark is classified as a Carnivore. It feeds primarily on specialized nutrients suited to its ecological niche in Warm temperate and tropical coastal waters, reefs.
A Hammerhead Shark can achieve top speeds of 40 km/h (25 mph) swimming and weighs approximately 230 - 450 kg (500 - 1000 lbs). Its expected natural lifespan is 20 - 30 years.
The Hammerhead Shark (Sphyrna mokarran) is currently designated as Critically Endangered on the IUCN Red List of Threatened Species.
Cite this Article
FaunaWiki Zoological Database (2026). "Hammerhead Shark (Sphyrna mokarran) Species Profile."
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