Saving Seafood

New shark research targets a nearly endangered species

September 16, 2020 — They are some of the most iconic and unique-looking creatures in our oceans. While some may think they look a bit odd, one thing researchers agree on is that little is known about hammerhead sharks. Many of the 10 hammerhead shark species are severely overfished worldwide for their fins and in need of urgent protection to prevent their extinction.

To learn more about a declining hammerhead  that is data poor but in need of conservation efforts, a team of researchers from Nova Southeastern University’s (NSU) Save Our Seas Foundation Shark Research Center (SOSF SRC) and Guy Harvey Research Institute (GHRI), Fisher Finder Adventures, the University of Rhode Island and University of Oxford (UK), embarked on a study to determine the migration patterns of smooth hammerhead sharks (Sphyrna zygaena) in the western Atlantic Ocean. This shark, which can grow up to 14-feet (400 cm), remains one of the least understood of the large hammerhead species because of the difficulty in reliably finding smooth hammerheads to allow scientific study.

To learn about smooth hammerhead behavior, the research team satellite tagged juvenile hammerhead sharks off the US Mid-Atlantic coast and then tracked the sharks for up to 15 months. The sharks were fitted with fin-mounted satellite tags that reported the sharks’ movements in near real time via a satellite link to the researchers.

“Getting long-term tracks was instrumental in identifying not only clear seasonal travel patterns, but importantly, also the times and areas where the sharks were resident in between their migrations,” said Ryan Logan, Ph.D. student at NSU’s GHRI and SOSF SRC, and first author of the newly published research. “This study provides the first high resolution, long term view of the movement behaviors and habitats used by smooth hammerhead sharks—key information for targeting specific areas and times for management action to help build back this depleted species.”

Read the full story at PHYS.org

NOAA Seeks Nominations for Atlantic Highly Migratory Species Advisory Panel

September 28, 2018 — NOAA Fisheries is soliciting nominations for the Atlantic Highly Migratory Species Southeast Data, Assessment, and Review Workshops (SEDAR) Advisory Panel. Panel members may participate in the various data, assessment, and review workshops associated with shark stock assessments. If selected to participate in a workshop, members would consider the scientific information—including data and models—used in stock assessments and advise NOAA Fisheries on the conservation and management of Atlantic sharks.

In 2019, NOAA Fisheries anticipates conducting a benchmark stock assessment for Atlantic blacktip sharks. In 2020, we intend to begin a research track assessment for the hammerhead shark complex. Meetings or workshops for these assessments will be determined according to SEDAR guidelines.

This is a 5-year appointment beginning in 2019 and ending in 2024.

Eligible Nominees

To be considered, individuals must have definable interests in:

  • Recreational and commercial fishing and related industries.
  • The environmental community.
  • Academia.
  • Non-governmental organizations.

View the full solicitation at The Fishing Wire

 

A hammerhead shark death could spark change

April 16, 2018 — Of the instantly recognizable organisms in the animal kingdom, the hammerhead shark is probably among the top three.

That distinctive skull design, molded by 400 million years of evolution, gives the large coastal shark its perfectly suited name. But many a tarpon fishing guide in Florida can also instantly identify a hammerhead shark by its tall sickle-shaped dorsal fin, and the feeling of dread that follows knowing another angler’s trophy catch may fall prey to it.

A large hammerhead appears menacing. It seems intent on causing harm. Those soul-piercing eyes on either end of its skull, connected to a specialized nervous system which allows it to see and hunt successfully, give it a face only a hammerhead mother could love. Its very sight strikes fear into the hearts of many whether they are beachgoers or boaters.

But the hammerhead’s looks could not be more deceiving. It is one of the most gentle, docile and mislabeled animals on this planet. In fact, of all the human shark bites recorded in history, according to the International Shark Attack File, only 17 unprovoked bites have been attributed to the hammerhead, and none were fatal. Truth be told, what should fear a large hammerhead shark most are stingrays, blacktip sharks and tarpon (especially the ones swimming near Boca Grande Pass).

Read the full story at the TC Palm

 

Commercial Fisherman Reviews Shark Fishing Research

October 12, 2017 — Meet Mark Twinam of St. Petersburg, Florida, who fishes from Madeira Beach for large coastal sharks such as hammerhead, lemon and bull sharks in the Gulf of Mexico. He’s part of a group of fishermen who help NOAA research sharks in exchange for landing and selling a small quota of sandbar sharks. Twinam fishes from his 40-foot single-engine boat, the Captain Tate, named for his son, who he proudly says is getting a doctorate in economics although he fished with Twinam as a boy. “I pretty much cured him of fishing. He decided schoolwork wasn’t so bad.”

How did you get into shark fishing?

I started fishing after high school, went grouper fishing, then fished with longlines for tuna and swordfish. There was a bycatch (unintentional catch) of sharks, and we thought we’d like to sell them. We caught some sharks off Tampa Bay in the 1980s and that was around the time the government was encouraging fishermen to go shark fishing. I’ve been doing it off and on ever since.

How is the shark fishing business these days?

Practically nonexistent. The fishing effort today is not even five percent of what it was in the 1980s. The quotas are strict, not many people participate although we’re filling the quota. Then there’s the research fishery. These are the only fishermen allowed to land sandbar sharks. I’m involved with the research. We take an observer on our boat; they count sharks, measure them, and collect other biological information. We get paid by selling the sharks we catch.

What are the major challenges in the shark fishing business?

The biggest challenge is the propaganda from environmentalists who say that everyone in the world is cutting the fins off and throwing the sharks back alive. This is not what we’re doing in the U.S. We follow the law, land sharks with fins attached, and sell both meat and fins. This year, we’ve had a tremendous challenge because environmentalists persuaded the California Legislature to ban the buying, selling and trading of shark fins. California was our biggest market for fins and a connection to the Hong Kong market. Now the price, if you can sell them, has dropped from $32 per pound to $14.

Read the full interview at the Fishing Wire

Retention Limit of Aggregated Large Coastal Shark and Hammerhead Shark Management Groups Increased to 36 Sharks per Trip Effective July 16th

July 17, 2017 — The following was released by the Atlantic States Marine Fisheries Commission:

The National Marine Fisheries Service (NMFS) has increased the retention limit for the commercial aggregated large coastal shark (LCS) and hammerhead shark management groups (Appendix 1) for directed shark limited access permit holders in the Atlantic region from 3 to 36 LCS (other than sandbar sharks) per vessel per trip effective July 16, 2017. The revised retention limit will remain in effect for the rest of the 2017 fishing season or until NMFS announces another adjustment to the retention limit.

This action is intended to promote equitable fishing opportunities in the region, while allowing quota to be harvested throughout the year. All other retention limits and shark fisheries remain unchanged in the Atlantic region.

As agreed upon by the Commission’s Coastal Sharks Management Board, the Commission will follow NMFS for in-season changes to the commercial retention limit. Therefore, no more than 36 LCS other than sandbar sharks per vessel per trip may be retained from the aggregated LCS and hammerhead management groups by a state licensed fishermen effective July 16, 2017.

The Federal Register commercial retention limit notification can be found at: http://www.nmfs.noaa.gov/sfa/hms/species/sharks/news/shark_news_2017.html. 

Shark landings can be found at: http://www.nmfs.noaa.gov/sfa/hms/species/sharks/Landings/index.html.

Please contact Kirby Rootes-Murdy, Senior Fishery Management Plan Coordinator, at (703) 842-0740 or krootes-murdy@asmfc.org if you have questions.

A PDF of the announcement can be found here.

Retention Limit of Aggregated Large Coastal Shark and Hammerhead Shark Management Groups Reduced to 25 Sharks per Trip

October 17, 2016 — The following was released by NOAA:

The National Marine Fisheries Service (NMFS) has reduced the retention limit for the commercial aggregated large coastal shark and hammerhead shark management groups (Appendix 1) for directed shark limited access permit holders in the Atlantic region from 45 to 25 sharks per vessel per trip effective 11:30 p.m. October 19, 2016. As agreed upon by the Commission’s Coastal Sharks Management Board (in December 2015), the Commission will follow NMFS for in-season changes to the commercial retention limit, therefore, no more than 25 sharks per vessel per trip may be retained from the aggregated large coastal and hammerhead management groups by a state licensed fishermen effective 11:30 p.m. October 19, 2016. This adjustment is intended to promote equitable fishing opportunities in the Atlantic region.

The retention limit for the large coastal shark and hammerhead shark management groups will remain at 25 sharks per vessel per trip in the Atlantic region (federal and state waters) through the remainder of the 2016 fishing season or until NMFS announces another adjustment to the retention limit or a fishery closure is warranted.