RTSea on TOPP's - Brilliant Research

The RTSea Blog has full coverage on TOPP (Tagging of Pacific Predators) findings this morning.

Great reading and first rate research.

If you were curious about Pacific white shark movement data here it is.

In California, many people involved in ocean conservation are familiar with the ground-breaking work of Dr. Barbara Block and the program she started, TOPP (Tagging of Pacific Predators). Using various types of telemetry and satellite tags, the TOPP crew has tagged a variety of ocean animals, from sharks to tuna, to turtles and more. Doing so has enabled them to determine many of the key migration routes these predators take - quite often of a seasonal nature, traveling great distances back and forth between key locations year after year.

After 10 years of tracking using over 4,000 tags and accumulating data from over 23 different species, TOPP has released a final report of its findings in conjunction with the Census for Marine Life, published online in Nature. The report shows that migration patterns play a very crucial role in the lives of many ocean predators. Writing in the Washington Post, Julie Eilperin repeated TOPP's description of the eastern Pacific Ocean as being akin to Africa’s Serengeti, teeming with wildlife and crisscrossed by migration corridors used by sharks and seabirds. Two currents play a key role in the migrations: the California Current - which stretches from western Canada all the way south to Mexico - and the North Pacific Transition Zone - which travels east and west between the sub-arctic and subtropical water.

Complete post here.

Shark Image of the Week

Off the coast of Massachusetts it's white shark tagging season and apparently the "hunting" is good.

“It’s a team effort. We’re all equally important — not one guy better than the other,’’ said Chaprales, 58, of Marstons Mills, who was a commercial fisherman for 40 years off Cape Cod and claims a perfect record tagging fish with his harpoon. “Greg’s the biologist, my son drives the boat, I do the tagging, and George does the flying.’’

And with more and more great whites appearing off the Cape, these three men from different walks of life have the unique opportunity to unmask one the region’s most mystifying species.

“This has nothing to do with the public, nothing to do with seals; it really has to do with advancing science,’’ said Skomal, 48, a state biologist from Marion. “There’s nobody else along the East Coast of the United States who has the opportunity to do this.’’

Kudos to the entire shark team, complete story here.

Great White Shark caught off Mass. coast

(NECN) - A Great White Shark was captured on Stellwagen bank on Saturday morning.

The crew of the SWEET DREAM II, a sportfishing charter boat out of Gloucester, Mass. tagged and released the 7-foot Great White. The identity of the shark was confirmed by Dr. Greg Skomal, according to the vessel's captain, Capt. Bruce Sweet.

The video of the shark, provided by Capt. Sweet, is looped in the companion video player.

Farallones Tagging Disaster - Follow Up?

In 2009 a film/research team badly mauled a white shark at the Farallone Islands.

What is not in dispute is the fact that a circle hook, very similar to the one seen here, was embedded deeply in the throat of a white shark.

The team went on to try and remove this hook by pushing bolt cutters through the gills of the animal and only succeeded in getting a fraction back leaving the animal with a hook still embedded in it's throat.

The resulting media storm over this event sent shock waves through both the research community and the commercial shark world. Only a few of the commercial shark diving operators on the West coast of the USA got in front of this issue, we were one of them. Others who are far more commercially invested in the Farallones said and did little in the public forum for reasons that remain their own.

Our long standing commercial and conservation efforts with sharks have been predicated by one mandate "do no harm to sharks." We support all research and commercial endeavors until they break that simple tenant.

The badly mauled shark at the Farallones was tagged with a real time GPS monitor and we were told the animal was "in great health." Unfortunately since December 8. 2009, all our efforts to get this real time data monitored by an independent source seemed to have hit a wall.

To date we have sent six emails to NOAA's and GFNMS regional managers and have been told the following:

The Gulf of the Farallones National Marine Sanctuary will work with an independent, qualified reviewer with expertise in white shark behavior, husbandry, and/or health to assess the status of the sharks tagged last Fall around the Farallon Islands.

b) The independent reviewer will assess the status of the sharks by reviewing footage of the tagging operations and comparing the tracking data from Dr. Domeier's tags with the tracking data from TOPP's research project at the Farallones over a year's timeframe. The GFNMS has already contacted Dr. Domeier for his data to begin the assessment.

c) The GFNMS will notify you as soon as that person has been identified and the work has begun.

d) The GFNMS will notify you of the results and post the results of the assessment on the Gulf of Farallones website (farallones.noaa.gov)

It has been five months since this tagging disaster and we have not heard anything from NOAA or the GFNMS staff in regards to this pressing matter and it is time that we did.

Editors Note: Fiji's Da Shark has weighed in on this issue (again) and we have to agree with his take, makes for great additional reading.

Tagging Great Whites - Research in Action

Chatham, Mass - The Massachusetts Department of Marine Fisheries tagged two great white sharks in the waters off Chatham on Saturday morning.

It marked the first time a great white shark had been successfully tagged in the Atlantic Ocean.The electronic tag uses satellite technology to record the travels of the sharks, allowing scientists to better understand their migratory patterns.

The sharks were spotted Saturday by scientists investigating sightings off Monomoy Island in Chatham. Officials say a harpooner tagged them with help from a state shark expert.

Environmental police will be patrolling the waters off Chatham over the holiday weekend following sightings during the week.

Also, officials closed Nauset Beach in Orleans to swimming after a shark sighting there.

Complete Story