Hammerhead Shark

Fact File:

Common Name(s):

Hammerhead Shark (Smooth Hammerhead)

(others:Balance fish; Black Hammerhead Shark)

Scientific Name:
Sphyrna zygaena (Linnaeus, 1758)

Usual Size:
To 400cm

UK Record Weights from rod/line:



MAFF Minimum Size: Shore: Boat:

Identification:A distinctive shark in the fact that the head has two lateral lobes which give it the distinct hammer shape and hence the name Hammerhead. Colour: upper side of the body brown to grey and the underside paler in colour.

Placentally viviparous - with litter sizes from 30/37 pups. Size at birth 50/60cm Females mature at 304cm and Males mature at 256cm.

Coastal and offshore species, found from the surface down to depths of 400m. This species of Hammerhead is the most temperate sea temperature tolerant.

Boney fishes, other sharks, squids and octopus plus crustaceans.

For UK waters from the western coast of Ireland and Southern British waters down to the Canary Islands

Additional Notes:
Numerous un-quantified sightings of this fish have been made, though it is fairly certain that the species does reach our shores on rare occasions, usually in the summer months.

REFERENCES: A Field Guide to The Sharks of British Coastal Waters - Vas 1991

FAO Species Catalogue 4 - Sharks of The World - Compagno

Fishes of the North-Eastern Atlantic and the Mediterranean - Whitehead, Bauchot, Hureau, Nielsen, Tortonese

Key to the Fishes of Northern Europe - Wheeler

GuestBook / MessageBoards @ http://ukfishid.proboards84.com/index.cgi

 Return to the