Scalloped Hammerhead Shark

Scalloped hammerhead shark swimming close to a reef.

About The Species

Scalloped hammerhead sharks are moderately large sharks with a global distribution. The most distinguishing characteristic of this shark is it's "hammer-shaped" head. They are threatened by commercial fishing, mainly for the shark fin trade. Two distinct population segments of the scalloped hammerhead shark are listed as endangered and 2 are listed as threatened under the Endangered Species Act.

NOAA Fisheries is committed to conserving and protecting scalloped hammerhead sharks. Our scientists and partners use a variety of innovative techniques to study, learn more about, and protect this species.

Learn more about scalloped hammerhead sharks

Status

ESA Endangered

in 1 distinct population segment

  • Eastern Pacific DPS
ESA Endangered - Foreign

in 1 distinct population segment

  • Eastern Atlantic DPS
ESA Threatened

in 2 distinct population segments

  • Central & Southwest Atlantic DPS
  • Indo-West Pacific DPS
CITES Appendix II

throughout its range

Scientific Classification

Kingdom
Animalia
Phylum
Chordata
Class
Chondrichthyes
Order
Carcharhiniformes
Family
Sphyrnidae
Genus
Sphyrna
Species
lewini