The Dorsal Fin

According to a WPTV.com report a 9′ (2.75 m) female scalloped hammerhead was caught by fisherman off-shore and then left dead on the docks of the Sailfish Marina in Palm Beach, Florida. The abandoned catch has stirred up some controversy. A WPBF.com report on the event quotes Jim Abernathy as saying that the catch was illegal based on Florida law. According to Abernathy, any fish that is not intended to be eaten must be immediately released under the state law.

Despite being listed as an endangered species on the IUCN Redlist, the scalloped hammerhead (Sphyrna lewini) is not a protected species in Florida waters.

A “monster shark” is in the news again. Much like the previous “monster” shark reports, this one can apparently change size at will (or at the will of whatever particular media outlet is reporting the story). Unfortunately, this shark was killed by fishermen. Even more unfortunate is that Vic Hislop has purchased the shark’s carcass.

The supposed “monster” this time around is a hammerhead (presumably a great hammerhead, based on its size), which is being reported at various lengths. The Daily Mail reports that the hammerhead shark weighs “one and a quarter tonnes” and is “20ft long.” Most other outlets are reporting the shark to weigh 1,200 kg and measure 5m (approximately 16′) in length. Researchers estimate the shark to be forty years old.
(continue reading…)

NOTE: The video below was produced prior to the defeat of the proposal to protect hammerhead sharks. WARNING: Video contains footage of shark finning.

A proposal introduced by the U.S. and Palau to protect hammerhead sharks (including the endangered scalloped hammerhead, great hammerhead, and the threatened smooth hammerhead) was defeated yesterday in Doha, Qatar at the CITES conference, according to an AP report. U.S. Assistant Interior Secretary for Fish, Wildlife and Parks Tom Strickland said, “The greatest threat to the hammerhead is from harvest for the international fin trade and the fin of the species is among highly valued of the trade,” and that regional fisheries bodies have done nothing to regulate the trade of this species.

Opposition to the proposal, led by Japan and supported by countries dependent on the shark fin trade, argued, “it would be difficult to differentiate the hammerheads from other species and would deprive poor fishing nations of much needed income.”

The notion that it would be difficult to differentiate any of the three species of hammerheads from other species is laughable, at best. Hammerhead sharks have a very distinct appearance, hence the name “hammerhead.” The latter half of the argument seems like a valid one from a financial standpoint, but it is also a flawed argument when it comes to establishing regulations to keep hammerhead shark populations at sustainable levels. If “poor fishing nations” rely on income from harvesting these species, it would only make sense that regulating the trade of the species would be beneficial to those nations. If these species become extinct or reach near-extinction levels due to over-harvesting, where will that leave the fishermen and those whose livelihood depends on this particular trade?

As was the case with last week’s multiple marine species protection proposal defeats, at the end of the day money talks. The wealthier markets that import these shark fins sell them at a huge mark-up, while the fishermen of the “poor fishing nations” only end up with a tiny fraction of what the shark fins are ultimately sold to the consumer for. I wonder if the countries with the major markets for shark fins would be open to the idea of paying the “poor fishing nations” a much higher percentage of the fins’ market value, since they are clearly concerned with the livelihood of these poorer nations.

And now, for some positive media featuring living hammerhead sharks…

YouTube user DiveDownBelow posted this video, which was filmed at Sipadan, Malaysia. It’s refreshing to see a healthy school of hammerhead sharks in their natural habitat. Kudos!

FastCompany magazine has posted a well-written article on shark conservation and protection efforts (to be addressed at the 2010 CITES conference) for the following species:

• oceanic whitetip sharks
• scalloped hammerhead sharks
• smooth hammerhead sharks
• giant hammerhead sharks
• sandbar sharks
• porbeagle sharks
• spiny dogfish

While the article doesn’t really feature anything new or groundbreaking as far as shark conservation news goes, it is fairly well-written (aside from a lame Jaws theme reference) and does a good job of detailing some of the commercial practices that threaten shark populations, which the general public and regular readers of FastCompany might not have been aware of. More articles like this in mainstream (and other non-shark focused) media can only help to promote awareness about the need for responsible shark conservation efforts. Kudos to FastCompany and author Lydia Dishman.