The March 2014 status review report conducted in response to a petition to list the scalloped…
Scalloped Hammerhead Shark
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 two 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 and protect this species.
- Eastern Pacific DPS
ESA Endangered - Foreign
- Eastern Atlantic DPS
- Central & Southwest Atlantic DPS
- Indo-West Pacific DPS
CITES Appendix II
- Throughout Its Range
In the Spotlight
Two distinct population segments of the scalloped hammerhead shark are listed as endangered and two are listed as threatened under the Endangered Species Act.
On August 14, 2011, NOAA Fisheries received a petition from WildEarth Guardians and Friends of Animals to list the scalloped hammerhead shark as threatened or endangered under the ESA throughout its entire range, or as an alternative, to delineate the species into distinct population segments. On November 28, 2011, we published a notice that listing may be warranted. We published the proposed rule to list under the ESA and status review of the species in April 2013. In July 2014, we listed four distinct population segments under the ESA.