Observation: Single adult smooth hammerhead shark (Sphyrna zygaena) observed on a pelagic shark dive a few miles off the coast of San Diego. Depth 0-30'. Kyle McBernie took a photograph of this shark.- Mike Bear, Citizen Science Project Director, Ocean Sanctuaries
LEO Coordinator Comment: This single adult smooth hammerhead shark (Sphyrna zygaena) was sighted near the northern edge of its Pacific range (Figures 2 and 3). Sightings of this species increase when the water warms. This species is listed as vulnerable threatened under the IUCN Red List. -Tom Okey, Ocean Integrity Research and the University of Victoria
Resources:
Smooth hammerhead shark on Fishbase
Smooth hammerhead shark on Wikipedia
References:
Compagno, L.J.V. (1984). Sharks of the World: An Annotated and Illustrated Catalogue of Shark Species Known to Date. Rome: Food and Agricultural Organization. pp. 553–554. ISBN 92-5-101384-5.
Ebert, D.A. (2003). Smooth hammerhead shark. Pages 178–179 in Sharks, Rays, and Chimaeras of California. University of California Press. ISBN 0-520-23484-7.
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Figure 1. Smooth Hammerhead, Shark Sphyrna zygaena. Sea of Cortez, La Paz, Baja California Sur, Mexico., 6 February 2009, Wikimedia Commons, elasmodiver
Figure 2. Smooth hammerhead shark (Sphyrna zygaena) point map used by Aquamaps, www.aquamaps.org, version of Aug. 2016. Web. Accessed 26 Apr. 2017.
