Hammerhead sharks

Great hammerhead (Sphyrna mokarran)

The Great hammerhead (Sphyrna mokarran) belongs to the family Sphyrnidae (hammerhead sharks) and is found in the Red Sea, with a wider Indo-Pacific range. It is a carnivore and usually seen in schools. It reaches about 300 cm and is found at 1–50 m depth. IUCN conservation status: Critically Endangered. Treat it with caution (caution): do not touch or handle it.

Great hammerhead (Sphyrna mokarran), a Red Sea fish of the hammerhead sharks family
Photo: iNaturalist / Wikimedia Commons

Quick facts

Scientific nameSphyrna mokarran
FamilyHammerhead sharks (Sphyrnidae)
Common name (IT)Squalo martello maggiore
Common name (EN)Great hammerhead
Maximum size300 cm
Depth1–50 m
DistributionRed Sea and Indo-Pacific
IUCN statusCR — Critically Endangered
HazardCaution

Description

Present throughout the Red Sea, with a broader range across the tropical Indo-Pacific.

Diving hazard — Caution: keep your distance, and never touch, corner or feed it.

Where it lives

Present throughout the Red Sea, with a broader range across the tropical Indo-Pacific.

  • Red Sea
  • Indo-Pacific

Diving safety

Caution. This is a predator or a fish with a strong bite. It is not looking for people — watch from a distance, do not touch, chase or feed it.

If it happens

  • For a bite: leave the water, control bleeding with direct pressure, clean the wound.

After

  • Marine bites infect readily — seek medical care and tetanus cover.

Frequently asked questions

What family does the Great hammerhead belong to?
The Great hammerhead (Sphyrna mokarran) belongs to the family Sphyrnidae (hammerhead sharks).
Is the Great hammerhead dangerous?
It needs caution: Caution. Keep your distance and do not touch or handle it.
Is the Great hammerhead endemic to the Red Sea?
No — it occurs in the Red Sea but its range extends across the Indo-Pacific.
How big does the Great hammerhead get?
It reaches a maximum length of about 300 cm.

Explore the Great hammerhead in 3D in the interactive atlas →