Protected Resources

Bigeye Thresher Shark

Scientific name: Alopias superciliosus
Bigeye Thresher Shark, Image: Alessandro de Madalena
Bigeye Thresher Shark, Image: Alessandro de Madalena

Current Management Issues

On April 1, 2016, NOAA Fisheries announced a not warranted 12-month finding (81 FR 18980), determining that the bigeye thresher shark does not warrant listing as threatened or endangered under the Endangered Species Act at this time. The species is not currently in danger of extinction throughout all or a significant portion of its range nor likely to become so within the foreseeable future.

On August 11, 2015, NOAA Fisheries made a positive 90-day finding (80 FR 48061), determining that the petitioned action may be warranted. A comprehensive status review was conducted to inform the 12-month finding.

On April 27, 2015, we received a petition from Defenders of Wildlife to list the bigeye thresher shark (Alopias superciliosus) under the ESA. The petitioners requested that we list either the entire global species, or any distinct population segments (DPSs). The petitioners also requested that critical habitat be designated concurrent with a final listing.

Please visit the Protected Resources Division’s ESA Section 4 page for more information on the ESA here.