IUCN threat status:

Near Threatened (NT)

Comprehensive Description

Read full entry


  Common names: shark (English), bonnethead (English), tiburón (Espanol), cornuda (Espanol)
Sphyrna corona Springer, 1940

Scalloped bonnethead,     Mallethead shark,     Scalloped bonnethead shark

A hammerhead shark with moderately broad, but short, angular, mallet-shaped side extensions on head; width of hammer 24-29% of TL; anterior margin of head broadly arched with very shallow side and central indentations; snout long, length before mouth usually more than 40% of head width; mouth narrowly arched; front teeth blade-like, smooth, with 1 oblique point, deeply notched on rear side; rear teeth like front teeth; first dorsal fin moderately large and erect, its rear margin concave; second dorsal fin base about half length of anal fin base; origin of second dorsal fin above middle of anal fin;  rear margin of anal fin nearly straight; transverse pit above tail base crescent shaped, a pit below tail base; tail fin strongly asymmetrical, notched under tip of top lobe, large lower lobe.

Grey on the back and side, white below; hammer, pectorals, pelvics and anal fin yellowish.

Size: reaches a maximum size of 92 cm; size at birth about 25 cm. This is the smallest species of hammerhead.

Habitat: a coastal species, demersal over soft bottoms.

Depth: 0-100 m?

The mouth of the Gulf of California to Peru, and Malpelo.   


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Shorefishes of the tropical eastern Pacific online information system. www.stri.org/sftep

Source: Shorefishes of the Tropical Eastern Pacific Online Information System

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!