The great Hammerhead Shark (Sphyrna mokarran), one species of Sphyrninidae that have the largest size of body usually founded in the warm water especially on the warm temperate ocean around the world like Pacific and Hindia ocean. This species can we found on the lagoon, coral reef, embayment, coastal water, sea mount, and island chain. They also found on the schooling but not on the large schooling scale.
The hammerhead shark commonly observed from coastal water to continental shelf and at depth ranging from 1m to 300m under the sea surface. They are high migratory species and nomadic. They distribution area such as Andaman Sea, Arabian sea, East china sea, Indonesia sea, gulf of Mexico,
Mediteranian sea, etc.
Like the other species of shark, the hammerhead shark is one of top predator on the coastal ecosystem that need a good condition for the live. They diet includes demersal fish (prefer), crustacea, otherelasmobranchs, and chepalopods. Grouper and catfish also the prefer food for great hammerhead shark.
Today, the great hammerhead shark is one of shark species commonly targeted for their large ddorsal and tail fins which are highly valued on Asian fish market. The impact for this condition is decreasing
population of great hammershark. IUCN give ENDENGARED status for this species.
- TRACS.2010.Profile of great Hammer shark.www.tracsaustralia.com.au (2010)
- Fisheries Scientific Committee.2011.PROPOSED DETERMINATION The Great Hammerhead - Sphyrna mokarran, as a Vulnerable Species.Ref. No. PD 49 File No. FSC 10/02