What causes sharks to have crooked spines?

 
Earthtouchnews has an article describing a bull shark with a crooked spine. That shark was found by the shark lab in Bimini. They named him "Quasimido" and are speculating on what caused that deformity.

The Bimini Shark Lab team secures "Quasimodo" for workup (a short checkup that includes taking various measurements of the animal). Image: Chelle Blais/Bimini Biological Field Station

Sarah Keartes writes: "Dr. Natalie D. Mylniczenko, a veterinarian who has spent time with the Shark Lab beforepresented several possible explanations for the bull shark's strange skeleton. It's possible that a deep abscess, granuloma, or slow-growing cancer is to blame – but Quasimodo's overall state seems to suggest otherwise. If disease were at the root of the deformity, we would expect to see at least some abnormal behaviour. The more likely culprit, according to Mylniczenko, is either a congenital or traumatic incident. In either case, this would have occurred when the shark was very young, and over time, his body would have compensated and healed in a skewed position."

Read the full story here: https://www.earthtouchnews.com/oceans/sharks/meet-quasimodo-the-bull-shark-with-a-very-crooked-spine/
 

Image: Chelle Blais/Bimini Biological Field Station

This Bull Shark is not the only shark with a deformed spine. At Guadalupe Island, we have our own Great White Shark with the same deformation. When we first met her a couple of years ago, I nicknamed her "Kinky" because of the very distinct kink in her tail. I have no idea what caused that kink, since she doesn't have any obvious scars or signs of injury. She was named "Screaming Mimi" by someone through the "Sponsor a shark" program of the Marine Conservation Science Institute. That sponsor program, is one of the ways they raise funds for the Photo ID database at Guadalupe Island.
 

"Screaming Mimi"

Just like the "Quasimodo" in Bimini who was seen swimming around a couple of weeks after the people from the Shark Lab examined it, "Screaming Mimi" also seems to be doing well and has been very active around our cages at Guadalupe Island.

If you want to meet "Screaming Mimi", or any of our other sharks at Guadalupe, contact us at 619.887.4275, crew@sharkdiver.com or www.sharkdiver.com

Let's go shark diving!

Cheers,
Martin Graf
CEO Shark Diver
 
About Shark Diver. As a global leader in commercial shark diving and conservation initiatives Shark Diver has spent the past decade engaged for sharks around the world. Our blog highlights all aspects of both of these dynamic and shifting worlds. You can reach us directly at staff@sharkdiver.com.

Bimini Bay Resort Joins Shark-Free Marinas

Bimini, Bahamas – Bimini Bay Resort announced its voluntary participation as the third marina resort in Bimini to join the Shark-Free Marina Initiative (www.sharkfreemarinas.com) whose purpose is to focus on the importance of reducing worldwide shark mortality. Bimini Bay Resort now prohibits the landing of sharks at its marinas and pledges to work in tandem with its sport fishermen to develop protocols under which threatened species of shark are permitted to recover and replenish their populations. As a leading employer of Biminites on the island, Bimini Bay will work to create and enforce community-conscious awareness of the need to protect Bimini’s sharks and waters. “One of our main focuses in 2011 will be to encourage responsible use of our ocean,” stated Rafael Reyes, President of Bimini Bay Resort.

The Shark Free Marina Initiative works with marinas, fishermen and non-profit groups to formulate community conscious policies and to increase awareness of the need to protect sharks. Currently 60 to 100 million sharks are slaughtered worldwide each year, which in turn poses a serious threat to the health of the earth’s oceans. Over the last five years, the United States recreational fishery has harvested an average of 500,000 sharks per year.

Bimini Bay’s participation in the Shark-Free Marina Initiative takes the Bimini
Islands unanimously one step closer to this marina initiative; a boon to the shark populations of the area and to the Bimini Biological Station. Bimini is home to healthy shark populations and to the Bimini Biological Field Station. Informally known as the Shark lab, the Bimini Biological Field Station on South Bimini is a world-renowned research facility whose subjects of study are the many species of sharks in the unique habitat of the Bimini’s North Sound and Bimini’s surrounding waters.

~ Bimini Bay Resort and Marina~
The island of Bimini offers jet-setters and boaters an unparalleled vacation experience at the island’s first four-star luxury vacation resort, located just 48 miles off the shore of South Florida. The ideal setting for a destination wedding, honeymoon or corporate retreat, anyone seeking a unique getaway can appreciate exceptional suite accommodations designed to provide families with ultimate comfort and space. All suites feature kitchens with granite countertops and contemporary designs with beach-chic décor and breathtaking views of the Atlantic or Bimini Bay. The resort’s marketplace at Fisherman’s Village offers a complimentary children’s activity center with year-round activities and camps. Other amenities include water sports, an infinity
pool, gourmet cuisine, two marinas--one accommodating mega yachts--and beach and poolside massage services. For more information or for reservations, please visit www.biminibayresort.com or call (242) 347-2900.

~About the Island of Bimini~
Proud Island of the Bahamas: The island of Bimini is located 48 miles east of South Florida, where the Gulf Stream meets the Great Bahama Bank. Bimini is heralded for its infamous flats fishing, offshore fishing and diving. Discovered in the 1500’s by Ponce de Leon in his quest for the Fountain of Youth, this colorful island’s abundance of unspoiled island views and emerald waters continues to attract yachting and water-sport enthusiasts searching for a relaxing haven that offers something for the entire

Today's Sharks: Smart, Tagged, and in Short Supply

Scientific American did a great piece this month with Doc Gruber in the Bahamas on sharks, research and conservation.

Sci Am jumped into the shark conservation arena with Shark Diver on 2008, but this latest article hits all the right notes.

Kudos.

"Many sharks have good learning capacity, which is one way we measure intelligence," says Samuel Gruber, a marine biologist at the University of Miami's Rosenstiel School of Marine and Atmospheric Science (RSMAS), who discovered in 1975 that lemon sharks could learn a classical conditioning task 80 times faster than a cat or rabbit. "I was shocked to find that they could learn so rapidly," he says.

New Bahamas Reserve Protects Marine Life From Development-Doc Gruber "Miraculous"

Success in the Bahamas. The CAPO Groups efforts to completely tear down the last mangrove lemon shark nurseries in the Bahamas was met with a storm of protest and seemingly deaf ears from the Bahamian Government who, for all intents, were more interested in the financial side of the new mega resort development in Bimini.

The campaign to save this site was driven by old fashioned pressure, letters, and a very slick series of online video's posted to You Tube and other eco sites. Today the Bahamas announced they will be creating a Natures Reserve in the area. Kudos to the many who started this project and who carried it through to this day, and to Doc Gruber and his team as well. As a template for the creation of other marine sites in the Bahamas this eco challenge was one for the books:

The Bahamas government has created a marine reserve off the island of North Bimini, preserving critical mangrove habitat and a shark nursery that had come under threat from a resort there.

The reserve, which will be protected from most fishing and other "extractive activities," is home to endangered species such as the Nassau grouper and the Bimini boa, as well as a vibrant nursery for lemon sharks.

The decision -- approved by the Bahamas cabinet Dec. 29 but announced last week -- is a setback for the Bimini Bay Resort and Marina, which has been clearing some of the island's mangroves to build a hotel, a golf course, a casino and two marinas, some of which have already been constructed.

Prime Minister Hubert Ingraham had initially considered establishing the reserve in the late 1990s, but his party lost power in 2002, and the development proceeded. Ingraham's party won back control in 2007.

Philip Weech, director of the Bahamas Environment, Science and Technology Commission, said the government concluded that the mangroves on North Bimini's North Sound contribute to the nation's fisheries as well as tourism. It is vital for the fisheries in the area to retain the ecosystem in that area," Weech said, adding that the reserve "helps us also to deal with the issue of climate change, flooding, storm surge and the biodiversity that's there."

Under the plan, the government will allow traditional land crabbing in the protected area, along with limited catch-and-release bonefish fishing.

Samuel Gruber, a University of Miami professor who has studied lemon sharks for nearly 20 years as head of the Bimini Biological Field Station, called the creation of the reserve "miraculous."

Gruber and four colleagues published a scientific paper last year showing that dredging in the North Sound for the resort construction in March 2001 had cut the first-year survival rates of juvenile lemon sharks there by more than 23 percent.

Ellen Pikitch, executive director of the Institute for Ocean Conservation Science at Stony Brook University, who has collaborated with Gruber on his shark research, said the Bahamas' decision is significant because mangroves represent "essential fish habitat, and they're dwindling all over the globe."

The Bimini Bay Resort and Marina did not return calls seeking comment yesterday. Weech said any further development, including the planned construction of a golf course, would be allowed only if it did not jeopardize the reserve.

Demian Chapman, a Stony Brook professor who has also conducted research in Bimini, said the golf course "would be a disaster" because it would damage the reserve's water quality.

"It's just like having a sewage plant next door," he said.

Shark Free Marinas, Bahamas

We are proud to announce the Bimini Sands Resorts participation in the Bahamas Shark Free Marinas Initiative. In the world of shark conservation there are "willing participants" and then there are those rare few who become invested in the success of a conservation endeavor.

Bimini Sands Resort is one of these. Taking the initial proposed sign design and adding some great modifications to it they have produced what we feel is the strongest message a marina can make in the Bahamas region against the killing for sport of sharks. With the spectacular death of a pregnant Tiger last year the timing could not be sooner.

Kudo's to them for this effort. A quick look at their blog tells the whole story this week.

Thanks to Duncan Brake who works at the Bimini Biological Field Station and who re-worked the graphic for the signs.

Shark conservation efforts always start with an "idea" but it take an organic effort to make the necessary changes in any region. Leading the charge in this region is Bimini Sands Resort.

Shark Research at Tiger Beach, Bahamas 2008

Recently Doc Grubers team from the Bimini Shark Lab went to Tiger Beach, Bahamas to conduct some "tagging and tracking"of the locals there.

Is it just us, or in a field of shark researchers, these guys seem to have more fun?

Here' the expedition report, it's a must read:

We anchored up and started to put chum in the water to attract the sharks. It didn't take long to get a good slick of menhaden oil and blood fanning out from the stern in the current. I went inside the boat to prepare my camera gear and wait for sharks to find their way to us. Steve had hung a huge snapper carcass off the back of the boat, so I was confident we would have some hungry customers showing up real soon. Within an hour we had six lemons circling the back of the boat. We started throwing bait in to them and drew them close to the boat with pieces of bait on lines. When they got within range we popped them with a pole spear to take a small skin sample for DNA analysis. More lemons joined the fray until we had approximately a dozen prowling off our stern. As we glanced around Steve and I saw a large dark shadow making a large arc about 100 meters behind the boat. We looked at each other and excitedly shouted "TIGER!!!"